半岛娱乐投注体育体育真人 Gypsum powder
半岛娱乐投注体育体育真人 Gypsum powder
半岛娱乐投注体育体育真人 Gypsum powder is one of the five major gel materials and plays an important role in the national economy. It is widely used in many applications such as construction, building materials, industrial molds and art models, chemical industry and agriculture, food processing and medical beauty. Important industrial raw materials.