FREEZEFRAME丰满人妻,抓住我的双乳咬我奶头视频看,国产丰满乱子伦无码专,丁香五月,开心五月,综合网,免费精品国自产拍在线不卡,国产精品久久久久久久免费看,无遮挡拍拍拍免费观看,欧美丰满大爆乳波霸奶水多,日韩不卡1卡2卡三卡免费网站2021,亚洲午夜精品久久久久久人妖

Oil Drilling Grade

① Introduction：The main functions of CMC or PAC are thickening and water-retention during the extraction of oil and gas process.

② Character：

1. Good salt tolerance,anti-bacterial property,less dosage and high yield；

2. Fluid loss reduction ,the viscosity improvement and strong suspending capacity；

3. Environmental friendly,nontoxic,harmless and odorless；

4. Good liquidity,convenient to construction,supply instant type PAC to improve drilling efficiency.

③ Standard： GB/T5005-2010.

④ Type： HDO03 series and PAC series.