Hongchen Optics co.,ltd Mobile: 0086 13221271991 Tel:0086-579-89891793 Fax:0086-579-89891789 Add:605/F,1377# Chouzhou Northern Rd,Yiwu,Zhejiang,China Hongchen Optics is a joint venture engaged in the produce and trade of various optical lenses. Our product range includes CR-39 lenses, round top bifocals, flat top bifocals, 1.523 mineral lenses, photochromic lenses, pc lens ,progressive lens, sunglasses lens ,also sunglasses and optical frames Our manufactory covers 3000 square ...