Singer-Ruser (HZ) Building Materials Tech. Co., Ltd. was built in 2006. We are manufacturing of Asphalt shingles, Rain water collector and Stone coated roof tile in Hangzhou, China. The technology importing from Korea, New Zealand, we are the pioneer in this line in China.   As leader of roofing system in China, the exported goods getting great reputation from overseas. 10years experience for solving your questions and the professional service is what are we standing.. Advantages of our products 1:Long lifespan we guarateed. 2:Best service and complete system of after-saler service we offer. 3:The superior material for products bring quality products for customer always.   We are looking forward to cooperate with you in future.