亚洲欧美日本A∨在线观看-国产黑色丝袜在线观看片不卡顿-久久av无码aⅴ高潮av喷吹-欧美成人午夜精品久久久

The company passed the China Quality Certification Center (CQC) ISO9002: 1994 and ISO9001: 2000 international quality system certifications in 2001 and 2003 respectively. In 2009, the original quality system was revised and certified in accordance with the ISO9001:2008 quality management system standard. In 2011, it passed the ISO14000 environmental quality system certification.