Hong Kong-listed optical communications stocks fell, led by Haiguang Xinzhen
(01191.HK) down over 12%; Zhongji Xuchuang (03308.HK) and Xizhi Technology-P
(01879.HK) down over 6%; Cambridge Technology (06166.HK) down over 5%; Huahong
Hongli (01347.HK) down nearly 5%.