AFA company is a technology-style valve enterprise which collect researching, producing, manufacturing and marketing into one group. General headquarter of company is located in Hong Kong Zhong Road, Qingdao Yihe International, No. 10, Block A 907. (Municipal government opposite side). Manufacturing base is located in Tieshan Industrial Park, Jiaonan. The company is situated on a land area of 25, 000SQM, and the construction area is 11, 000SQM in first period. The company has processing centers, CNC machine tools, precision machine tools, spherical thermal spray equipment, testing equipment and other advanced processing detection means. The company sets up the service centre having scientific research to develop and designing that centre, mass control and sell the queen, the tough metal hermetic sealing ball check upkeep centre, and be maintained contracting for the entrance metal hermetic sealing ball check refit, debugging and the technology consult about.