Quy Hop Stone Co., Ltd QHSTONE - Leading Company in the field of Manufacturing and Exporting Uncoated & Coated Calcium Carbonate Powder (CaCO3) in Vietnam
QHStone碳酸钙粉末提供被证明的表现，配方灵活性，并且许多产业包括纸，油漆，橡胶，石英和陶瓷…
