Shandong hanrui building materials co ltd. is a company integrating R & D, production and sales. We are mainly engaged in the R & D, production and sales of silicone sealant in construction, industry, automobile and other fields. We have advanced automatic production equipment and complete testing equipment. After years of R & D and production accumulation, we have continuously absorbed the advanced experience of similar products at home and abroad, and established a strict and scientific product quality control system and perfect after-sales service system.