Ningxia Northsky Industry and Trade Co., Ltd. is a comprehensive manufacturing and trading company established in 2005 in China. Our main products include carbon additives, magnesium spindled products, activated carbon, carbon coke, coking coal and silicon carbide. Our company provides competitive prices, reliable quality products and swift delivery. We do our best to provide consistent and quality products to meet all domestic and foreign customers' needs. With a carbon additive ...