Established in 1998, Weifang Zhengda Waterproof Materials Co., Ltd. covers an area of 18,000 square meters and is a professional enterprise integrating the production, research, construction and sale of new waterproof materials. Our company produces "shenglong" brand SBS and APP modified bitumen membranes and self-adhesive waterproof materials. In 2002, we attained ISO9001:2000 international quality system certification. Our company has a perfect quality system and a perfect after-sales service system. Our products are sold to more than 20 provinces, municipalities and autonomous regions in China and delivered to North America, West Europe, Southeast Asia, Africa and Taiwan area and other countries and regions."Unity, integrity, honesty, innovation" is our core idea. With modern enterprise management mechanism, we provide high quality products and excellent service fo
