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- 전기공작 , Solar energy , How to make solar cell step by step American Tech 13:09 Review & Test 6000W Pure sine wave inverter from Banggood American Tech ▶ 11:37 Free Energy 100% , How make solar cell from CD
- [Preview CHINA HI-TECH FAIR 2012] INSOFT to show telecommunication network management software 'FTMS' INSOFT(CEO, Woo Wang-don, www.insoft.kr) will participate in 'CHINA HI-TECH FAIR 2012' held at China , Senzhen Convention and Exhibition Centre, from Nov 16 to 21 and introduce telecommunication network