精品国产综合成人亚洲区,精品一区二区在线观看,欧美成人自拍视频,国产三级精品三级,91亚洲人成手机在线观看,中文字幕在线看视频一区二区三区,免费人成网站在线播放

The quality & inspection centre of the factory is equipped with various kinds of high-precision analytical instruments.In the meantime,according to th requirements of ISO9001:2000 Quality System,high-quality specialized personnel of chemical analysis are assigned to monitor and inspect all the raw materials,auxiliary materials,intermediates as well as finished products to provide clients with reliable quality guarantee.

Our spirit is quality first and credit supreme.