Hopewind Electric Co., Ltd., A Professional ManufacturerAC motor drive: 0.4kW~60MW frequency inverter / VFDWind power generation system: 1~7MW grid-tie converterPhotovoltaic power generation system: 500kW~2MW grid-tie inverterWhy Us:1. China TOP1 of wind power converter(MW-level VFD), with annual sales over US$200 million;2. Professional manufacturer certified with UL, TUV, Golden Sun, CQC, CE, ISO9001, ISO14001, OHSAS18001, LVRT, CNAS;3. R&D Center: 13,000 square meters; Production Area: 23,000 square meters;4. 200 R&D at 35% of staff members, 60 members for aftersales technical support;5. Over US$50 million R&D investment;6. Core R&D team and management team are with an average of more than 15 years experience in electric and electronics product development;7. Over 200 authorized patents;8. Advanced MES system for quality control, like all materials tracking;9. 100% IQC for PCBA, 100% funtion test, 100% aging test for 8hrs;10. High level of testing equipment:Salt spray corrosion resistance testing chamberGyclic temperature & humidity chamberSalt spray and dust test chamberWalk-in high and low temperature / damp heat resistance testing cabinElectrostatic immunity testerElectrical fast transient/burst generatorVibration platformSurge generatorOur Achievement: 1. The first one who settled the voltage imbalance fault caused by the ride through of electric train sloved in Datang Sanmenxia Wind Farm all over the world;2. The first one whose full power 3.0 MW converters with which single machine and single winding batch delivered all over the world;3. The first one who operated DFIG and full-power converters in Yunnan,Qinghai plateau in China;4. The first one whose 2.5 MW air-cooling DFIG converters batch delivery;5. The first one whose MW level C&D smart PV inverters batch delivery in China;6. The first one whose wind power converter CNAS approved lab get in China;7. The first one of whose DFIG / full power MW series converter obtain the SUD/TUV certification in China;8. The first one who implemented the batches supply of converters with imbalance LVRT function in China;9. The first one whose wind power converters delivered more than 12000 units, and wind turbines&＃39; replacement more than 1000 units;10. The first one which established the grid adaptability testing platform, LVRT testing platform, Medium Voltage test platform with patent technology in China