The HT series activated clay produced by the company is made of magnesium-rich bentonite rich in magnesium and is refined by acidification process. It has a large specific surface area and a large activated acid center. Therefore, it has strong adsorption and catalytic ability. It is widely used in industry for decolorization and refining of various vegetable oils, animal oils and cosmetic raw materials, refining of mineral oils and recycling of waste oils. It can be used for sewage treatment and toxic gases. Filtration and catalytic cracking in the petroleum industry.