Construction on the second 4500tpd cement clinker production line of Tongchuan Shengwei Building Material Co, Ltd began on September 20th, according to latest information from the company. Total investment in the second and third phases of the company’s project exceeds RMB1bn. Upon completion of the project, the company’s production capacity in Shaanxi Province’s Tongchuan City will reach 5mt of cement clinker and 6mt of cement annually, thus making it the largest cement producer in Shaanxi Province.