Hangzhou Singer Building Material Co., Ltd. was built in 2006. We are a main producer and supplier of asphalt shingles, rain gutters waterproofing materials Hangzhou, China.Our factory covered about 4000 square meters, we have 5 inspection people to control the quality goods. We kinds ...

Zhangjiagang Baolilong Underlay Co., Ltd is specialized in producing middling-grade and high-grade underlayment. The company covers an area of 30,000 square meters has more than 100 professional engineers. day capacity can reach 80,000 metersOur consistently abided by the management idea ...