激情四射的网站久久婷婷七月丁香|桃色五月天丁香国产综合美女在线|欧洲av免费看青草社区在线观看|亚洲合集一区在线亚洲无码1区电影|精品亚洲中文字幕色婷婷兔兔五月天|高清精品卡二V天堂在线视频|无毒无码av综合色五月天|天天婷婷丁香国产永久无码

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.