欧美乱码伦视频免费_色琪琪www618seon_日本免费a∨片免费_久久久夜色精品亚洲a_午夜性大片_亚洲综合精品伊人久久

       Bosite has a full range of testing equipment, the establishment of a complete set of quality assurance system, strict testing procedures. Nondestructive testing, spectroscopic analysis, physical and chemical test, hardness test, wall thickness test, mechanical performance test, metallographic analysis, pressure test and CAD valve design center.

       From raw materials into the plant, process and machine factory all aspects of tracking and detection, when each of our products are in accordance with the national standard of 100% tests.

       Advanced detection equipment and strict scientific management, so that each of the finished products can stand selection, which is the secret of Bosite products to sell well.