Profile: Shanghai Yaohua Nano-Tech Co., Ltd. is an ISO 9001 certified company. We specialize in nano-material. We focus on ultrafine series, healthcare (pharmaceutical and food) series calcium carbonate and special calcium oxide. Our products are widely used in the fields of plastics, rubber, paper, paints, adhesive, sealant, oil ink, pharmaceutical and food industries. We offer healthcare series XM - 401, which is used as antiacid medicine, medicine for gastric ulcer, duodenal ulcer and calcium tonic. We also provide XM-202 fine calcium carbonate that is used in PVC profile & pipe, film, wire & cable, and resin products like UPVC construction material.