General Mining and Trading Co.,Ltd. (GMT) is one of Thailand’s leading Gypsum producers. We are also a producer of Anhydrite Gypsum. The GMT has been established since 1989. We are growing everyday. Because of this, we become a stable company at the

Sahachart Group : บริษัท สหชาติเศรษฐกิจ จำกัด ผลิตและจำหน่ายแร่ยิบซัมทั้งใน-ต่างประเทศ Agricultural Gypsum high purity gypsum. GreenCal is suitable for

Thailand's leading producer of gypsum, dolomite, limestone, anhydrite, gypsum powder, dolomite powder and crude palm oil for industrial use.