Ningbo Gongyao Sealing Materials Co., Ltd. is established in 1965. We mainly supply sealing gland packing, asbestos products, fiberglass products, carbon fiber products, ceramic fiber products, expanded graphite products, and PTFE products. We are one of the largest manufacturers of sealing, fireproof, and heat insulation in china at present. We have 6,500 square meters building in the south factory, and another 13,300 square meters in the north, with more than 200 skillful employees. Our ...   |