Yuyao ZhuoEr Seal Factory is one of the leading manufacturers of various insulating materials and products in Ningbo, China, and is one of the earliest fire-resistant, heat-insulating and sealing production enterprises in China.We have 20 years of experience in the production of yarns, ropes, tapes, fabrics, packaging, casings and other sealing products mainly from ceramic fiber, glass fiber, basalt, asbestos, TPTE, graphite and other materials.