We think of environment, human and future. Renewable energy company

Transcription

1 We think of environment, human and future. Renewable energy company EN

2 CONTENTS Overview 04 E&H Story 06 Vision & Philosophy 08 History 10 Photovoltaic System 18 ESS(Energy Storage System) 22 LED 26 Wireless Communication System Head Office Factory #701, 27, Seongsui-ro 7-gil, Seongdong-gu, Seoul, 04780, Rep. of KOREA Tel : Fax : , Geodudanji 2-gil, Dongnae-myeon, Chuncheon-si, Gangwon-do, 24398, Rep. of KOREA . info@eandh.co.kr R&D 32 R&D

3 Overview E&H Story 4 Overview E&H Story 5 E&H Story Since established as a specialized solar energy company in 1973, E&H Co., Ltd. came to grow into the best professional enterprise in Korea by taking the lead in distribution and diffusion of new and renewable energy. During that time, we have distributed various photovoltaic generating facilities to domestic and overseas markets and greatly improved the efficiency of PV generation by applying new developments such as solar light micro-inverter and i-sun monitoring system & incoming/distributing panels. Also we have significantly contributed to national energy saving through distributing/diffusing the LED lighting newly developed and performing the ESCO business, etc. We are currently equipped with the industry s truly best technology and quality in the green industry field such as new and renewable energy, etc. and also positively comply with the nation s stabilization policy during the high power demand season through new development of ESS (Energy Storage System) and EMS (Energy Management System). From now on, we will keep on developing the results of PV generation business accomplished for the past 40 years or so, and further realize the second take-off through the reinforcement of core competencies on new-concept micro-inverter and ESS & LED lighting business fields, and thereby raise ourselves to globally competitive new and renewable energy technology company. Leading company thorough technology and quality innovation

4 Overview Vision & Philosophy 6 Overview Vision & Philosophy 7 Open Management Honest Management complying with the basics and the principles E&H puts priority in customer satisfaction, creates the best technology through specialization of all the members, pursues the happiness of mankind through the supply of infinite clean energy and considers environment and future. Philosophy Value Creation Management Innovative Management Innovative Management leading changes and pursuing new values Value Creation Management maximizing customer satisfaction and corporate value } Vision Jumping into a global company specialized in new and renewable energy equipped with competitive edge.

5 Overview History 8 Overview History 9 History Awards 2017 Received a Citation of Public Procurement Service Administrator 2015 Received '10 million US dollars Export Tower on the 52nd Korea s Trade Day 2014 Received an industrial award in new & renewable energy field (Presidential citation) 2013 Received a commendation from Public Procurement Service Director (for the contribution to vitalization of MAS) 2012 Received the Seoul Mayor s commendation (for new and renewable energy distribution performance) 2010 Selected as an advisor for Low Carbon Winter Olympics of Pyungchang in Awarded Excellent Construction Model by KEMCO (Service Center of Kia Motors Corp.) A Citation for Meritorious Achievement(Korea Electrical Manufactures' Cooperative) Received a Citation of Public Procurement Service Administrator Acquisition of Participation's Certification for Small Business Priority Purchase System Selected by KEMCO as PV specialized company(2002~2017) (Housing, general supply, installation, supply to provinces, commercial power plants) Appointed as Overseas Procurement Market Launching Company(G-PASS Company) Received the Exemplary Taxpayer Award in the Fiftieth Taxpayers' Day Conducted a Feasibility Study on Peru Project for the Korea Plant Industries Association Selected a Supported Company for Overseas Private Network Consulting Business from the Small & Medium Business Corporation 'Korea International Trade Association, $ 10 million Export Tower' Awards Selected as IBK Best Partner Energy Service Company (ESCO) registration Selected as KITECH Partner Selected as Hi Seoul brand companies Received Hi-Seoul 5 million US Dollars Export Tower in 2014 Selected as Hi Seoul brand company Appointed as overseas procurement market launching company (PQ company) Received an industrial award in new & renewable energy field (Presidential citation) 2013 Received a commendation from Public Procurement Service Director (for the contribution to vitalization of MAS) 2012 Received the Seoul Mayor s commendation (for new and renewable energy distribution performance) Appointed as Repairing & Maintenance Service provider in the PV generation field of new & renewable energy facilities 2011 Constructed E&H plant in Chuncheon Industrial Park 2010 Selected as an advisor for Low Carbon Winter Olympics of Pyungchang in Established E&H R&D Center (Korea Industrial Technology Association) Constructed first solar power plant at Golf Club of Korea ( Ariji C. C, 200kWp) Changed company name to E&H Company Limited Selected as an environment-friendly construction material supplier in the field of Kyunghyang Housing BIPV (Busan Federation for Environmental Movement) Selected by KISTI as a partner for the R&D technology roadmap supporting project for co-development of thin film solar cells with KISTI (Korea Institute of Science and Technology Information) Concluded a contracted on PV generation system supplier with Public Procurement Service (PPS) Trophy awarded for excellent company of leading energy-savers by Seoul Korea Awarded Excellent Construction Model by KEMCO (Service Center of Kia Motors Corp.) Participated in the Joint Technology Development Project performed by Korea Institute of Energy Research (2006 ~ 2009 / PV System Optimization Performance Upgrade Technical Development) Participating in the Seoul Metropolitan Government s strategic energy biz team for Industry-Academic R&D Cluster joint technic project (2005~2007) 2004 Participated in the PV system demonstration research program for Chosun University dormitory complex construction Participated in the 2003 PV module supply projects performed by the Korean Government 2002 Participated in the 2002 model supply projects performed by the Korean Government (Yeosu, Onyang and Changwon cities) 2001 Participated in construction of PV generation and heating system of Gwangju empirical research project 2000 Constructed PV system for CCTV purpose on the highways 1999 Installed weather observation equipment using solar photovoltaic electricity 1998 Changed the company name to Korea Solar Hi Energy Co., Ltd Sold the OEM products under the partnership with Greek Sole Corporation 1996 Constructed the nation s first solar electric generating facility 1991 Sold the OEM products under the partnership with M.G.I USA (Fuel saver) 1988 Awarded Letter of Appreciation for boosting Energy Savings Policies of Korean government 1986 Selected Promising business of small and medium-sized company by Korea Institute of Geology, Mining & Materials Awarded Letter of Appreciation for boosting Energy Savings Policies of Korean government 1985 Affiliate sales with Geordano of France under OEM deals 1983 Constructed solar-powered air-conditioning system at KEMCO building 1978 Excellence at 1st Energy Exhibition Awards 1977 Solar collector receives Excellence Award as No. 1 Exported RAY PAK to United States 1973 Established Korea Solar Energy Co., Ltd.

6 Photovoltaic System 10 Photovoltaic System 11 Photovoltaic System Environment improving effect!! If we install 50kW solar system in a building, 48.25CO2 ton of CO2 can be reduced annually. And this can give the effect same as planting 5,762 trees of nut pines, saving 15.9 toe of energy and 93 drums of crude oil. We provide the Total Solution..... Solar 86,000TW Wind 870TW Geothermal 32TW Photovoltaic power generation can product more electric energy than other renewable energy system.. We provide all solutions related to solar energy generation system from design and construction to maintenance and consulting.

7 Photovoltaic System 12 Photovoltaic System 13 Customized Technology Global Marketing Accurate and Stable Design and Construction Government procurement business - Obligatory facility installation project in the public institutions (New, additional or renovation project of public institutions) - Local government project (Solar energy specialization project of local governments) Providing customized service, function and design which operators want. Providing globalized high level service by proper designing and construction depending on each country s situation and weather condition in domestic and overseas projects. Providing perfect construction and best quality system based on the best experience and accumulated know-how in our country as a specialized solar energy generation system company. Government grant project - Private sector project (Private companies and etc.) - Green home 100 project (Houses and apartments) Commercial Electricity Generation project - RPA(S) project (Commercial Electricity Generation Equipment, Energy public company) Private projects - Building Certifying System E & H Solar Simulation System Date Reduce the error range using advanced simulation program involving all the items related to solar energy generation. - Investigation of installation place conditions. - Weather environment analysis by local area. - Suggestion of optimum design.

8 Photovoltaic System 14 Photovoltaic System 15 PV Construction Performance 2002 ~ 2016 PV Construction Performance Capacity (kw) BIPV Construction Performance 2002 ~ 2016 BIPV Construction Performance Capacity (kw) Overseas construction Performance 18,792 Overseas construction Performance - Domestic construction Performance 15,396 Domestic construction Performance 1,120 Total construction Performance 34,188 Total construction Performance 1,120 PV Garden 5_TOOL (Seoul) 252kW Japan FIT Solar Power Projects ㄴ MW Participating in new renewable energy test distribution policy which has started from 2002 by government. (Obligatory facility installation project in the public institutions, Local area distribution project, Private sector distribution project, 100 Green home distribution project) BIPV Integrated [ Building Integrated Photovoltaic ] type of solar power system with the facades of buildings, roof materials, window, etc. Strong points Reduction of building construction cost as separate installation land cost is not required. Garden 5_LIFE (Seoul) 352kW Japan FIT Solar Power Projects ㄴ 1.26 MW Woonjung Station (Gyeonggi-do, Paju-City) 17.3kW

9 Photovoltaic System 16 Photovoltaic System 17 i-sun series Junction Box i-sun inverter AC i-sun station Grid i-sun connector i-sun monitoring i-sun connector It is a cable connection device equipped in the power supply cable with an even interval which is installed onto the module in a row to supply AC power coming out from individual modules through i-sun inverter to commercial electricity load. The first individual module installation type inverter in our country. i -Sun Inverter of E&H Co., Ltd. is designed and constructed by the new conceptual decentralized inverter system for which a very small and light weight individual inverter is installed in an individual module, and generates an alternate current per each module, preventing the loss from miss-match and bringing the effect of electricity generation increase through preventing Christmas lights effect. - Interval of T-shape connector : longitudinal module 1.1[m], widthwise module 1.7[m] - Diameter of Cable : 2.5[ mm2 ] - Water-Proof Type i-sun station Real time monitoring and transmission of operation status of and troubles in the solar energy generation equipment in which i-sun inverters are mounted on each module are possible by this equipment. - 7 LCD panel mounting - Communication Protocol : PLC real time communication - Communication protocol between data bus : RS485 or TCP/IP - The number of connectable micro inverters : 6Ch x 210 = 1260ea - Other functions : Remote on/off control i-sun monitoring i-sun is a new concept decentralized inverter system which can maximize the output of the solar energy generation equipment. i-sun microinverter (300W) Solar energy generation system of E&H Co., Ltd. is a new concept PV system applied with a monitoring system and an all-in-one type i-sun inverter per each module, which is differentiated with the existing systems. It also increases output efficiency more than 10% by minimizing the causes of output impediment for the power generation by solar energy generation system. AC module -integral inverter AC module -installation type inverter BIPV AC module inverter (Duct type) 1 generation type 2 generation type Existing inverter type monitoring simple monitoring type + wired communication line (between inverter and RTU) + Electricity generation amount + weather condition monitoring per each array + wired communication line (between inverter and RTU ) + Electricity generation amount + weather condition + module status per each array i -sun inverter type monitoring 3 generation type monitoring per each array + PLC / WiFi + Electricity generation amount + weather condition + module status per each array + individual module status

10 ESS 18 ESS 19 ESS Energy Storage System While the electricity is being stored in spare time, the stored electricity can be used in peak time. Energy Savings and Peak Power Reduction! PCS is a Bi-directional power conversion device that stores electricity in batteries using renewable energy or grid when the demand is low and provides the stored electricity when the demand is high. High Efficiency, High Power Factor Using high-efficient IGBT, Implements high efficiency and power factor by optimal current control. Various Modes of Operation Directly operates output reference required by user or Supports an automatic operation by time schedule. Convenient System Monitoring Automatically controls the system and monitors the operating conditions by Digital Controller and easily keep track the data on a LCD screen. Reliable and Easy UI Designed for users to operate and monitor the system more easily and conveniently. ESS for Home PCS for Industrial

11 ESS 20 ESS 21 ESS(Energy Storage System) in all of electrical power system, this ESS will be adapted. Specifications ESS for Home 3kW /5kW PCS for Industrial 50kW /100kW Configuration ESS Normal PCS ESS Hybrid PCS Option Grid AC/DC DC/DC User Interface System Controller Photovoltaic AC/DC DC/DC DC/DC User Interface System Controller PCS Power ESS for Home Size & Weight 3kW 5kW Normal Hybrid Normal Hybrid PCS Power PCS for Indusrtial Size & Weight 50kW 100kW Normal Hybrid Normal Hybrid Stand-Alone Operation Mode : Discharge Normal PCS : Charge ~ PCS ~ PCS Mode 1. Grid:Out / :Off ~ PCS PRA Block Pack * PRA : Precharging Relay Assembly * BMS : Management System Mode 2. Grid:Out / :Discharge ~ PCS BMS Option Hybrid PCS Mode 3. Grid:Out / :Charge ~ Grid Stand-Alone PCS PRA Block Mode 4. Grid:In / :Charge ~ Pack * PRA : Precharging Relay Assembly * BMS : Management System PCS BMS Capacity Width (mm) Length (mm) Height (mm) Weight (kg) PCS Power Width (mm) Length (mm) Height (mm) Weight (kg) 6.2 kwh 12.5 kwh 6.2 kwh 12.5 kwh kwh 15.7 kwh 12.5 kwh 15.7 kwh ESS for Home PCS Size & Weight Normal 3kW, 5kW Hybrid kg 25kg Width (mm) Length (mm) Height (mm) Weight (kg)

12 LED 22 LED 23 E&H Co., Ltd. helps making cleaner air by reducing wasted energy through high efficiency energy technology and CO2 generation. energy for the Future Engineering Construction Manufacturing Technology Material Technology LED of E&H Co., Ltd.

13 LED 24 LED 25 LED Solar Street Lighting [ Patent No ] ESS including Cross- and PV Streetlight Utilizing ESS Solar Panel (250W) Photovoltaic Panel Panel Bracket Synchronous Buck/Boost Stage Changer Selector (Charge) Lead Acid Li-ion Common LED and i-lumen LED are different in the following aspects. FB Gate Driver Buck/Boost Control MPPT Control PV Reverse Polarity Connecting Protection Buck/Boost Control MPPT Control Reverse Polarity Connecting Protection Capacity Monitoring LED Driver Dimming Control LED ON/OF Control LED Load Selector (Discharge) RF Network (Monitoring) Ant Lamp Housing Light Source Pole Inspection Box Solar Controller Li High Efficiency Lighting Design Cost Effectiveness Multi-type System diagram Pole Foundation Ground Box Long Life High Efficiency Less Glare LED Street Lighting Anchor Bolt Broad Viewing Angle Room Pb Feature ㆍ Various patented technologies compose the differentiated competitiveness of LED of E&H Co., Ltd. ㆍ Removing dazzle and providing brighter lighting with minimum electricity. ㆍ Extending life by improving thermal resistance problem and realizing brighter and lighter product. LED Street lighting 150W ㆍ Securing superior price competitiveness through improvement in the materials. LED Street lighting 50W

14 Wireless Communication System 26 Wireless Communication System 27 Wireless Communication System Vehicle Management System Wireless Manhole Surveillance System Real-time Surveillance System from the remote office

15 Wireless Communication System 28 Wireless Communication System 29 Vehicle Tracking Management System Why Is It Needed? The company has a need for an effective management of vehicle that operate for one day more than hundreds of factories. So, this is introduce the system of the vehicle driving Conditions inside the factory in real time monitoring a radio frequency equipment in the vehicle for the purpose of effective management. Features & Merit. Real-time tracking & management system of vehicle operating state form remote office ( Vehicle Information: Position, Tracking history, Moving speed, Equipment, etc.). Optimized effective system: Low cost of maintenance and operation fee. Can service to another service used installed wireless network. System installation expense is the most low more than the other system Comparison of the communication system Section GPS + RF (E&H) GPS + ZigBee GPS + CDMA Module Type GPS Module + RF Module GPS Module + ZigBee Module GPS Module + CDMA Modem Positioning Method GPS GPS GPS Communication Frequency RF : 424MHz ZigBee 2.4GHz (ISM Band) CDMA Modem: 800MHz Network configuration (pros and cons) - Repeater and Gateway configuration for Rf communication - Repeater and Gateway only requires a power supply construction - Repeater and Gateway configuration for ZigBee communication - ZigBee communication distance is short compared to RF communication - CDMA modem structure is attached to each TAG - No need to install repeaters and Gateway -The CDMA communication costs increase depending on the TAG. Distance(Outdoor) ~ 350m 70 ~ 100m Unlimited in CDMA Telecommunication Area Position calculation GPS and client program correction GPS and client program correction GPS Frequency licenses No No Yes - Repeater, Gateway Installation - Wired & wireless N/W, Power supply components construction - Container Management System Reference - Vehicles management system of Hyundai-Steel - Repeater, Gateway - Wired & wireless N/W, Power supply - construction - Container management System - Reefer vehicles management system - Vehicles management of HD heavy industries System Configuration (Case study: Incheon Factory) RF 424MHz Situation Control (Monitoring) SMS System Components TAG Repeater Gateway Section Details Section Details Section Details Model HVMS-T100 Model HVMS-B100 Model HVMS-G100 Use Frequency Effective distance RF : ~ MHz 400m(max) Use Frequency Effective distance RF : ~ MHz 400m(max) Use Frequency Effective distance Transfer speed 2400bps(max) Transfer speed 2400bps(max) Transfer speed Communication method/output RF 10mW@ERP (Max) Communication method/output RF 10mW@ERP (Max) Communication method/output CDMA: 824MHz ~849MHz RF : 400m(max) RF : 2400bps (max) CDMA: 23~27dBm Gate way Power supply 3.7V (Li-Polymer) : rechargeable Power supply 220V(Used Adapter: 6V/1A) Power supply 220V(Used Adapter: 6V/2A) TAG Repeater (RS-485 To TCP IP) [ Data collection and Total monitoring & management ]. Network configuration : Tree structure, Wireless Network - RF(424MHz). Vehicle position information data transmit to the server through the CDMA Modem. Head office Application Program & Architecture UI Web Browser Monitoring Entry & Exit Management Management History System Management Client layer WebSocket Scheduler Spring Connection FrameWork Pool Cache Login Security WEB/WAS Json Generate DB Access Module Data Access Data JDBC Interface Channel GIS & DB GeoServer DB to DB Data Channel Oracle 10g EE Code Information Reason violation Info Raw Location Info Escape routes Info Long-term stop Info Installation Equipment info Operations Management Info ( Server connected TCP/IP communication ). Or, Vehicle position information transmit to the server through the RS-485 Collecting Equipment Collecting Equipment Application Server Collecting Equipment. Through the SMS communication from the server (Server -> Gateway), doing the check of whether or not working and the remote parameters change for each device. (transfer period time, etc.) TAG Repeater Gate Way TCP /IP Adapter Collecting Server Collecting Module DB Module Escape routes judgment Module Virtual server Long-term stop judging Module DB Module

16 Wireless Communication System 30 Wireless Communication System 31 Features. Open/shut status of manhole cover : Preventability of theft of manhole cover terrorism, Wireless Manhole Surveillance System damage or accident to underground facilities and illegal installation of other facilities etc.. Temperature of manhole inside : Fire by overheating on electric cable is preventable and also quick restoration is possible by immediate notice of event position.. Overflow and drainage of the manhole inside : Preventability of the unexpected damage or accident by overflow. System Description Manhole Wireless system Concept MAP monitoring Why Is It Needed? Social Significance of Manhole Most infrastructures to supply energy resources(electricity, oil, gas & water) and even for communication are being installed underground more and more as cities are modernized. Characteristics of Manhole. Manhole is the underground space necessary to connect cables or ducts and to check up their state.. Such underground infrastructures ard now exposed to the high risk as fatal accident, illegal occupation of ducts or brutal terrorism attempting social dread or paralysis by easy intrusion into the manhole of unauthorized people.. Despite such situaion, almost all manholes in the world left as they are without any measures due to the financial and technical difficulty. Benefits. Prevention of serious accidents as the shut-off of electricity, gas, oil, water and communication etc. caused by intentional or accidental incidents on the underground key infrastructures.. Prevention of terrorism or social disorder. Economical Effects By Manhole Surveillance System : Reduce maintenance costs dramatically by prevention of electric accident & shorten of blankout time through effective management of manholes.. Saving about US10 million dollars of 4hours of blackout (10,000kW line). Reduction of labor cost for manhole management and surveillance. (Published by Japanese electric company [1995]): Work amount of 3 hours by 8 persons can be covered by only 1 man. System Components Collection Terminal Main Repeater Micro-strip Antenna : Superior radiation of electric wave. Terminal : Integral type of Antenna, Communication Module & Processors. (built-in) : No need of external power source. Sensor parts -Open / Shut sensor -Temperature sensor -Wave-level sensor -Other sensors customizable Receiving data from the collecting terminal (transmitter) or the sub repeater. Transmitting received data to the Server via CDMA or GSM. Confirming the state of data reception. Installation place : On the nearby electricity pole, street light pole, building or distributing board. Repeater SUBWAY Server & Program?. Receiving the data reported by several collecting terminals.(transmitters). Alarming and displaying the manhole position & event nature on server, in case of any event occurrence related to manhole.. Assorting and storing the received data per catagory in the database.. Monitoring management system, registration and battery status & replacing time.. Controlling the terminals related to report period & program change etc.. Customizing the support program to manage various events as customers need.

17 R&D R&D 32 R&D R&D 33 Efficiency increase of solar energy generation system Research and Development for overall area. Silicon, cell, module, Efficiency increase of inverter E&H Co., Ltd. affiliated research center is leading E&H, developing the base and applied technology for construction part, inverter part and efficiency improvement part by technology researchers. The research center would grow to be loved by customers by devoting itself to exchange, cooperation and technology development through accomplishing various projects including industry-academy projects. R&D Work List R&D E&H Co., Ltd. is devoted to a few main themes such as improvement of degree of utilization, independent type system, system stabilization and monitoring control in the research center to secure the technological superiority in the improvement of degree of utilization and efficiency of solar energy system and to reinforce future growth-driving force. Due to the special features of the solar energy field, excellent researchers composed of the experts familiar with the actual site are vigorously studying, and 50% of the them are holding master s degree. Especially, we have been applying patents in system area every year, and a few patents are showing our exclusive capability in the aspect of intellectual property. The role of the researchers in the E&H Co., Ltd. affiliated research center is innovation of the business structure through continuous investment and strategic resource distribution, development of high valued premium products, process innovation and finding out future growth engine. For these missions, they are devoted to the aggressive research and development activities such as securing and educating of core human resources, market and customer oriented subject selection and operation, convergence of the achieved core technologies and new technologies and preparation of future new businesses Carried out technology development for improving performance of Photovoltaic System, together with Korea Institute of Energy Research Institute Carried out joint research with Strategic Energy Business Group, for developing key technology of crystalline silicon solar battery and realizing its application system Carried out joint research with KISTI for developing module of thin film solar battery We are now developing jointly connecting process, equipment basis and key technology against 3D MSP with support of Seoul Microinverter improve thermal radiation Micro-Inverter Development High-efficiency (more than 15 percent) solar cells and electronics materials joint research and development Research and development of i-sun monitoring system for maximizing operation rate of Photovoltaic System Environment-friendly High Temperature Heater Development using Carbon Allotropes (Seoul National University of Science & Technology) DATA Gathering Unit Wireless Site Optimization Monitoring & Control System Automobile Monitoring System 5~20% of efficiency increase Development of MIC + monitoring License / Certification PV SYSTEM PCS New and Renewable Energy Specialized Corporation License Certificate of R&D Center Registration of Expertise Construction Business (Metallic Door Structure) Registration of Electrical Construction Business Certificate of Venture Enterprise Factory Registration Registration for Power Generating Business Registration of Specialized Energy Saving Corporation INNO-BIZ Company Certificate Selected as Hi Seoul brand companies ISO 9001 Registration Certificate ISO Registration Certificate K-OHSMA Registration Certificate UL certification for Photovoltaic Module Registered GS certification of Photovoltaic monitoring system Acquired KS certification for LED lighting Acquired KC certification for LED lighting Certificate of Suitability for Lighting/Broadcasting/Telecommunication Equipment Direct Production Certificate (PV devices, LED, distribution panel) Utility Model (Inclination Control Device for Stationary PV Solar Power System) Registered Trademark Rights (i-sun) Acquired certificates of LED High efficiency energy material Designation of Quality certification(q-mark) (Photovoltaic devices, LED lighting) New & Renewable Energy Facility Certification (MIC) IEC Certification for PV Module LED Targeting small & medium capacity power generation market Patent Shade, Miss-matching Raising of the viewpoint of overall system efficiency Solar Energy Transfer Optimization Module (Hybrid) Solar Energy Conduction Optimization Module (Hybrid) High Frequency Resonant Power Converter through High Frequency Phase-Shifting Pulse Width Modulator BIPV with Micro-inverter Improved AC Type PV Module for Better Output Performance PWM Drive LED lighting controlled through Micro-Controllers ESS including Cross- and PV Streetlight Utilizing ESS PV Monitoring System by Unit

18 If you are together with E&H, you ought to plant invisible trees Head Office Factory . #701, 27, Seongsui-ro 7-gil, Seongdong-gu, Seoul, 04780, Rep. of KOREA Tel : Fax : , Geodudanji 2-gil, Dongnae-myeon, Chuncheon-si, Gangwon-do, 24398, Rep. of KOREA

19 If you are together with E&H, you ought to plant invisible trees E&H CO., LTD.