在线观看小毛片_AV影音先锋天堂网_国产欧美日韩精品A在线观看_JLZZ大全高潮多水_成人高清视频免费_亚洲电影天堂成人_人妻中文字幕黄片_免費在線國產視頻_2021最上传新少妇精品视频网_91亚洲精品秒播

Chinese | English

Company News

The Company Has Successfully Passed Supervision and Audit of the Three System Certification and Continue to Maintain the Certificate
AddTime:2020-8-19 14:31:55  Author:  From:本站  Hits:2416

On August 19, 2020, the notice from CSU INTERNATIONAL CERTIFICATION CO., LTD., shows that Shandong Deshunyuan Petroleum Sci& Tech. Co., Ltd has successfully passed the second external supervision and audit of quality, environment and occupational health and safety management system certification. The management systems meet the requirements of standard, therefore the company will continue to maintain the certifications registration qualification, and the certificates continue to be valid as well.

 

Provide the highest quality products and services to customers worldwide
Committed to becoming an international first-class oilfield chemical supplier
Contact Us