Chinese optical module makers slump after report on planned US import ban

Shares of Chinese optical module makers such as Zhongji Innolight slumped on Wednesday after a Reuters report that ‌the Trump administration was drafting a ban on U.S. imports of new models of ‌Chinese data centre components. Export-dependent optical module makers including Zhongji ​Innolight, Eoptolink Technology and Suzhou TFC Optical Communications fell sharply. The U.S. government is working on a measure on national security grounds to bar imports of new Chinese optical transceivers, which allow data to travel over fibre-optic cables at the speed of light within data centres, Reuters reported.