Hangzhou Jingyi Chemical Co., Ltd use the high quality of bentonite to produce the well drilling mud. This product is according with GB-T5005-2001(eqv ISO13500:1998) standard, it has good suspension, high thixotropy ,little filtrate volume ,excellent capacity of making mud, conveniently use and is easy to adjust the density of the well drilling slurry, etc. It is necessary of basic raw material on deep drilling-well and ocean drilling-well project. Meanwhile, it also used in geological exploration, shield project and reservoir reinforcement and other industry.