ACST CHEMICAL in China has 17 years experience in manufacturing high quality waterproof sealing products, including butyl tapes and sealants. They are widely used in construction, building, roofing, auto, RV, container and electrical field. We manufacture both double-sided and single-sided butyl tape (with aluminum, non-woven, PE, EPDM and EPR backing).Different sizes, shapes and colors (grey, white, black and etc). Anti-mildew bathroom tape is our special product. We also make butyl, acrylic and neoprene sealants. Our acrylic sealant is water-based and without out any volatile organic compound. So it's environmentally friendly. We have two kinds of butyl sealants, hardening and non-hardening. The latter is especially for steel construction. Please visit our website www.acst.cn for more information. Any requests, please be my guest to contact me.Ricky Yin, e-mail:sales3@acst.cn