lived in Chengdu optical fiber co., Ltd. (CDSEI) from Chengdu PTIC cable co., Ltd. (CDC) with Japan Sumitomo Electric Industries Limited (SEI) in 1998, a joint specializes in fiber optic products manufacture and sales of the Sino-Japanese joint venture.

"Chengdu PTIC" is one of the largest communications cable manufacturers in China, listed h shares on the Hong Kong stock exchange in late 1994.1992 year, the introduction of foreign production line fibre production, becoming one of the earliest person in fiber production enterprises.
    the "Sumitomo Electric" is a multinational group, founded in 1897, the well-established production technology and product quality.
    "lived in Chengdu" has excellent staff and a modern management system, combined with professional drawing techniques and equipment, to provide users with high-quality products.

company passed ISO9001, ISO14001/GB/T28001 three-in-one management system certification in 2005, first through one of the three standard of the industry.