Henan Costar Group Com.Ltd ,located in the downtown area of Nanyang,a famous historical and cultural city in China, was established in 1968, which is a large optical& electronic enterprise, it also enjoys the position as the hi-tech key enterprise for earning foreign exchanges in Henan province and export base of mechanical and electrical products approved by China' National Foreign Trade Department. Under the group, there are several solely-owned subsidiaries operated with business department system. Furthermore it aso owns several joint venture companies and joint stock companies having stablished modern enterprise systerm and realizing the strategy of pluralized operation and group development. It has pass the ISO90001Quality System Authentication and been chosen as the enterprise with reputation degree of "double A" in successive years.   As one of the biggest optical cold processing bases in China,our company has taken optics as the dominant factor with the comprehensive development of optics, mechanics and elctrics. The electric products present the scene of common development of six major parts. namely optical components, optical thin film ,optical lens, optical instruments,optical equipments and optical chemical industry. The output of photoresistance ranks first in China and third in the world. In recent years,our company has introduced the most advanced optical coating equipments and testing instruments with purpose to concentrate support on the development of optical thin film, which is the core in optic industry so as to make a mass production of series of optical thin film products used in the most advanced projection systems and to be recognized by the first-class international opticalcompanies. Over the past years We have established steady relations of business cooperation with well-known international corporations of Japan and America in the optical field. therefore, ninety percent of products are exported to America, Japan,European Union,Southeas