Shenzhen city co-tech ltd., located in one of the 401 factories located in the guangzhou district of boang district, shenzhen city, located in one of the 401 factories, located in the shantytown district of shenzhen city, and representing yang xianhua, operates on general lines of operation: electronic devices, communications accessories, electronics, soft and hard circuit boards, pentagold moulds, flushed products, camera, camera development and sale; electronic commerce; domestic trade; and import and export of goods and technology. (except for items prohibited by law or administrative regulations)