2003 main products were approved by GS,CE,UL, join UCIEAA, invested in hi-tech edge of semi-conductor lightings and established optoelectronics department
2004 passed ISO9001:2000 quality system certification, PST scored 4.8
2005 passed OHSAS 18000 and ISO14000 certification, became a Chinese golden supplier of www.alibaba.com , http://vivalux.en.alibaba.com/