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On December 15, 1993, China ’s first Submarine Optical Cable, a total of 1252 kilometers of submarine optical cables, opened from Shanghai Nanhui to Miyazaki, Kyushu, Japan. The total communication capacity of this submarine optical cable system amounts to 7,560 communication circuits, which is equivalent to more than 15 times the Sino-Japanese submarine coaxial cable built in 1976. The opening of China-Japan submarine optical cables has increased China's international communications capacity by more than 80%.
This is the construction work (data photo) of the construction workers in Luchao Port, Nanhui, Shanhai.
This is the "Post and Telecommunications No. 1" ship of China Submarine Cable Construction Corporation participating in the submarine cable laying (data photo).