Yulong polymer Technology co.,ltd was established in 1992 which located in Yantai, Shandong province. It has 2 factories covering more than 50000 square meters, and has more than 300 staff. It has 5 series products: silicone sealant, polysulfide sealant, acrylic sealant, MS sealant and acetic sealant. Otherwise, our company participates in the draft of the national industrial standards of silicone sealant.