Established in 2006, Quy Hop Stone Company Limited (QHSTONE) is a premier manufacturer and exporter of Uncoated Calcium Carbonate Powder, Stearic Acid Coated Calcium Carbonate Powder and Calcium Carbonate Grits. Strategically located in Chau Quang Ward, Quy Hop District, Nghe An Province, we are serving our worldwide customers in accordance with industry norms. Our production facilities are equipped with cutting-edge German technology, including ultra-fine grinding lines, stearic acid coating systems, and automated packing machines. With an annual output exceeding 100,000 tons and 3,000 sq. meters of storage, we ensure consistent, timely global supply. Our company adheres to ISO 9001:2015 standards, supported by a fully equipped laboratory featuring the Malvern Mastersizer 3000E, Konica Minolta CR-410, and Ohaus MB45, enabling strict quality control.