Yen Bai Industry Mineral Joint Stock Company (YBM) is leading name of the market for manufacturing and exporting Calcium Carbonate Powder in Vietnam. High purity marbles are mined from Mong Son Pit on Thac Bac Lake, evaluated as best quarry in Vietnam and Southeast Asia. The content of this calcium is greater than 98%, whiteness 98%, brightness 96% meet the demand of many industries. Read More