_dgi is an optical cable brand under Shenzhen Tefa Information Co., Ltd., which was founded in 1988 and participated in the formulation of optical cable communication industry standards. It is a state-owned high-tech enterprise in Shenzhen, focusing on the research and development and production of optical cables, distribution network equipment and communication equipment.

_ ⑿ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ ⒐ The company has successively won the honors of "Top Ten Most Influential Enterprises in China Optical Fiber and Cable in Thirty Years", "Most Competitive Enterprises in China Optical Fiber and Cable 10" and "Top 100 Enterprises in China Electronic Components". It is one of the top 100 manufacturing enterprises in Guangdong Province, a credit demonstration enterprise in Guangdong Province and an independent innovation brand in Guangdong Province. It is also one of the top 100 enterprises in Shenzhen and the first batch of leading enterprises in independent innovation industries in Shenzhen. Since its establishment, the company has been cared for by many party and state leaders.