PETROLEUM GRADE CMC Product features: 1, high degree of substitution, good uniformity of substitution PETROLEUM GRADE CMCfeatures: 1, high degree of substitution, good uniformity of substitution . 2, high transparency, viscosity and water loss can be controlled . 3, suitable for fresh water, sea water, saturated brine slurry . 4, stabilize soft soil structure, prevent collapse of wall of a well . ...