Guangdong Sihui Instrument Transformer Works Co., Ltd, a national Hi-New-Tech enterprise, has the following outstanding developments: 1. Become Top 500 Mechanism enterprise in China in 2009, Top 100 independent innovation enterprise in Guangdong, Top 500 enterprise in Guangdong, Top 100 manufacture enterprise in Guangdong, and Top 5 instrument transformers enterprise in China in 2010. 2. Professional in designing, manufacturing and selling instrument transformers, dry-type power