Name: ISO9001 Certificate
Certificate No: 02603Q10286R1S
Date: Nov 20, 2003
Valid until: Nov 19, 2006
Range: WWL series customized high-power DC constant-voltage and constant-current power supplies.
Reference: Issued by Beijing Tianyizheng Certification Center.

Name: CE Certificate
Certificate No: ED/2007/50074C,ED/2007/50075C,ED/2007/50076C
Date: Jun 08, 2007
Range: Design, safety and production of WWL series power supplies
Reference: Issued by SGS Taiwan Ltd. EC Laboratory