In the production of organic silicon monomer raw materials, as the end-product, high-purity dichloromethane/ DCM/ methylene chloride is very important. However, the production of DCM often contains a certain amount of impurity calcium chloride. Shinkai’s metal filter with sintered powder filter elements can perfectly filter and purify the DCM to 2ppm. In October, we just completed the transformation of a set of methylene chloride filter. Shinkai’s sintered metal filter cartridges successfully replaced the ceramic membranes, effectively reducing the number of backwashing, increase the service life of the filter.