Tangshan Polar Bear Building Materials Co., Ltd. was founded in 1989, has fixed assets of 70 million RMB and covers an area of 180 thousand square meters. Our company specializes in manufacturing, selling and researching the series of calcium sulpho-aluminate cement and dry-mixed powders. Our company produces 200,000 tons of calcium sulpho-aluminate cements and 200,000 tons of dry-mixed powder every year. We are one of the largest enterprises that produce this kind of cement in the ...