被女同桌调教成鞋袜奴脚奴,两个人的视频免费高清在线观看,国产精品成人无码久久久,亚洲色欲综合一区二区三区

En

中文
Experts team

Meet a team of experienced & knowledgeable professionals who make our customers pleased with their ability to create the best PMA products to improve performance of clients.

The produce and technical team members of our team are all doctors and masters graduated from chemistry major of key universities with more than 10 years’ experience in the development and application of lubricating oil and additives.

These team members are experts of enjoying the State Council allowance, senior engineers of professor level, senior engineers, etc., and we have also established long term cooperation of technical and application with these professional research institutes and important customers both of domestic and abroad.





Mr. Wang Zeen

Graduated from the Department of Chemistry of Lanzhou University.

Professor level senior engineer with nearly 40 years of experience in the development and application of lubricants and additives and production management.



Dr. Zhang Dongheng

Ph.D. of Polymer Chemistry and Physics in Chinese Academy Sciences Chemistry Institute.

Senior engineer, has nearly 20 years of experience in the development and application of lubricating oil additives and new lubricating materials.



Mr. Wei Guanwei

Master of Polymer chemistry and physics in Nankai University.

Senior engineer with 15 years of experience in the research, development and application of lubricant additives such as Viscosity Index Improver, pour point depressant, antirust, etc.





Mr. Kong Lingjie

Master of Chemistry in Fudan University.

Senior engineer with nearly 15 years of experience in the research, development and application of lubricant additives such as Viscosity Index Improver and pour point depressant.



Dr. Liu Gongde

Ph.D. of Polymer Science and Engineering in Sichuan University.

Senior engineer, received special government subsidies from The State Council.

Dr. Liu has nearly 30 years of experience in the development and application of lubricating oils and additives.





Dalian IOE New Material Development Co.,LTD @ 2020 all rights reserved HELPDESK:ADVERY
日本一本免费一二区| 国产美女在线精品免费观看| 精品国产午夜肉伦伦影院| 无码国内精品人妻少妇蜜桃视频| 国产一卡2卡三卡4卡免费网站| 亚洲av成人无码久久精品老人| 久久国产超碰女女AV| 最新中文字幕AV无码专区不| 成在人线AV无码免费看网站直播| 麻豆第一区MV免费观看网站| 欧美人成精品网站播放| 国产成人精品日本亚洲| 黄 色 网 站 在 线 免费 观 看| 国产婷婷成人久久av免费高清| 国产粉嫩嫩00在线正在播放| 国产精品乱码久久久久久小说| 国产成人精品必看| 欧美成人精品视频在线播放| H动漫精品网站网址| 人妻丝袜AV中文系列先锋影音| 欧美日韩国产码高清综合人成| 无码日韩AV一区二区三区| 国产成人免费视频精品| 久久中文字幕人妻丝袜系列| 久久久无码精品亚洲日韩蜜臀浪潮| 伊人久久大香线焦AV色| 年轻漂亮的人妻被公侵犯BD免费版| 国产午夜成人久久无码一区二区| 国精产品蘑菇一区一区有限| 国产精品久久久久久久久岛国| 丰满人妻被黑人猛烈进入| 人妻少妇精品专区性色AV| 国产亚洲精品精华液| 男人和女人做爽爽视频| 日本一道一区二区视频| 国产呦交精品免费视频| 无码AV片在线观看免费| 久久国内精品自在自线观看| 色欲香天天天综合网站无码| 日日噜噜噜夜夜爽爽狠狠| 精品无码一区二区三区在线|