★  The Zibo Linzi yinhe high-tech development Co., Ltd. has overall passed the ISO9001 international quality system conformity in 2001.  

   ★  We have joined the national inventive patent of the intelligent thyristor controlling module series products in 1999.

 ★  The specialist group had appraised 

theintegrated thyristor modules for 

phase-shiftregulating and controlling

 in 2001 and firmlybelieved them as

 the national new accented products in

 that year.