午夜电影院,精品人妻少妇,国内揄拍高清国内精品对白,最近中文字幕在线mv视频7

Home > About Meiling > Honors and Qualifications

No pain no gain. Scientific and standardized management and good business performance have been fully recognized by relevant departments. The group company has passed ISO9001 quality management system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health and safety management system certification, IATF16949 international automotive industry quality management system certification, GBT29490 intellectual property management system certification, and has obtained large high-pressure containers (A1 design ) special equipment production license, ASME "U" steel stamp authorization, NBIC "NB" steel stamp authorization, pressure pipe components special equipment manufacturing license, environmental engineering professional contracting qualification, environmental engineering and drainage engineering design qualification, ecological construction and environmental engineering consulting qualification and other qualifications. Meanwhile, the company has obtained various honorary titles, including national inspection-free products, Chinese famous brand products, Chinese well-known trademarks, well-known brand products of China's petroleum and chemical industries, and nutrition and health recommended products of the food channel of CCTV.


The company is a national contract-abiding and credit-honoring enterprise, a national high-tech enterprise, a director unit of the sixth council of China Chemical Equipment Association, a food safety and integrity unit in Shandong Province, a backbone enterprise in China's environmental protection industry, one of top ten enterprises in the operation of national environmental pollution control facilities, and a council member of China Environmental Protection Industry Association Council.


The company has established Shandong Provincial Enterprise Technology Center, Shandong High-efficiency Energy-saving Heat Exchanger Engineering Technology Research Center, High-Concentration Organic Wastewater and High-salt Chemical Wastewater Treatment Technology R&D Center, Shandong Academician Workstation and Shandong Postdoctoral Innovation Practice Base, etc.


天天干天天操综合| 九九热视频只有精品| 中国凸偷窥XXXX自由视频妇科| 日本日日夜夜| 国产免费999| 色窝窝一区二区无码| 亚洲日二区三区| 91精品国产AⅤ| 腾王滕王阁序原文| 亚洲综合一区无码精品| 香蕉视频 久久| 久久久久久久久久久精| 97久久就要综合| 国产免费小视频| 草草影院精品一区二区三区| 老妇毛片| 欧美在线潮喷| 亚洲色图视频小说| 欧美一级S| 日韩精品在线| 天天色天天| 中文无码一区二区不卡ΑV| 欧美精品丝袜久久久| 中文字幕加勒比| 久久28p| 又大又粗 又长又国产| 日韩日B福利| 成人h动漫精品一区二区器材| 中文字幕精品一区二区精品| 先锋影音资源在线观看| 老司机人人Av| 16无码免费观看| 91网精品| 欧美99精彩视频| 好看影院| 欧美精品一区二区三区在线| 欧美色图一区| 中文字幕官网| 午夜影院 成人毛片| 农村黄色毛片| 亚洲中文字幕无码夸克|