Dear Sir,
  CHONGQING CHANGZHENG OPTICAL CO.,LTD ,founded in 1992, is located in optical industrial estate in Chongqing Beibei, China. As a joint-venture, it's mainly involved in presision optical instrument produce. With highly skilled manufacturing and R & D operations, its' output  is included 10 millions optical prisms and lens and million binoculars per year.With own exporting department, it has connection with clients in Europe, American, Russia and South-east Asia.
It has own optical prism and lens product line,coated lens product line, plastical fitting pieces product line, mould process workshop and binoculars' assemble lines.  By highly competent technical and completed equipments,there is continual investment in new product each year. With good administration and quality control system, its' series of binoculars are founded satisfaction by the clients in domestic and foreign markets in reasonable price as well as high quality.
Based on truly sincerity, we hope to cooperate with all friends from any countries for the benefit of both sides.
Don't hesitated to write to us if you need more information or quotation.