久久精品成人一区二区三区-久久精品大片-久久精品道一区二区三区-久久精品店-97视频免费在线-97视频免费在线观看

In our 30 years of development, China star has developed a mature management team and management system, continuous improving according to the needs of the enterprise. We adhere to take the quality as the enterprise survival principle to forge the "YangYang" as star brand in auxiliary industry . We have already passed the ISO9001: 2008 quality system, ISO14001: 2004 environmental management system , GB / T28001-2001 occupational health and safety management system, and our products have passed SGS test and reach preregistration.
 

All of our products are covered with quality and transportation insurance by Chinese people's Property Insurance Co., Ltd.