purchased shenzhen donzhi technology co., ltd. and chengdu fuliye electronic technology co., ltd., for the transformation into the intelligent network and military industry information
a joint venture- shandong sdg light source and optical communication co., ltd., was founded
winning the honorary title “national enterprise technical center”
the joint venture –changzhou sdg huayin wire and cable co., ltd. was founded
sdg information chongqing optical cable co., ltd., was founded
1200-slotted core optical cable in china with most core numbers and the latest structure in the world
the only first-inspection qualified enterprise in the national “power sky road” engineering project
a joint venture –shenzhen sdg information optical cable co., ltd., was founded
shenzhen sdg information optical technology co., ltd., was founded
optical cable products applied in olympic venues
intelligent optical access system won national scientific and technological innovation award
annual output doubled 1 million kmf
first 10kv oppc optical cable utility line
publicly listed in shenzhen stock exchange (stock code: 000070)
shenzhen sdg infomation co., ltd. (sdgi), was officially registered for its establishment
the first large-span optical cable without connectors in china– no. 1 cable over the yellow river
the first adss optical cable in china– no. 1 cable over the yangtze river
one of its predecessors – shenzhen optical communication networks co., ltd., represented one of the earliest companies in china producing and developing the optical fiber and optical cable.
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