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2005 The 7th Generation (DC) PMRV Modular systerm Air Conditioning Controller
2002 The 6th Generation AC Multi-split commercial Air Conditioner
2001 The 5th Generation Net Systerm Home Appliance Development:
500,000 sets mass product
2000 The 4th Generation High efficient Low Cost verstile Standized controller
developed:1million sets mass product
1999 The 3rd Generation 3x1,4x1 AC –DC inverter :800,000 sets mass
product
1998 The 2nd Generation 2x1 AC –DC inverter :500,000 sets mass product
1997 The 1st Generation One by One AC-DC inverter:2million sets mass
product
1990 Started inverter technique R&D
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