Top one quality in China factories for CMC paper grade, Large quantity: 50,000TONS ... viscosity and water loss can be controlled . 3, suitable for fresh water, sea water, saturated brine slurry . 4, stabilize ... , reduce filteration loss . 6, has excellent performance in drilling of oil . Petroleum grade Product: PAC-LV, PAC-R, CMC ... ≤13≤12≤11 ≤26≤18Test StandardAPI 13 I oil drilling fluids garde CMC