不卡高清av免费欣赏_一本午夜毛片_亚洲精品私拍国产在线观看_中国国产aa一级三级片_欧美亚洲另类五月天综合_午夜无码888理论不卡_好吊色综合网天天高清_漂亮的保姆高清在线观看_有码中文字幕在线_日韩一级片内射视频4k

Our company has gained ISO9001 accreditation, which in turn has resulted in a controlled system to inspect every processes including incoming raw materials, manufacturing packaging, delivering finished products, storing and transporting.

With sophisticated devices and equipments, we adopt chemical and instrumental analysis to guarantee high purity and quality. Besides, we scientifically inspect each process, make detailed records, and track various data in order to control quality.