Ningbo Gongyao Sealing Materials Co.,Ltd-a professional manufacturer and exporter of chinese sealing heat insualtion materials,owns three factories ,specialized in manufacturing braided packings,fiberglass,asbestos.non-asbestos products and other materials.Our company own Up-to-date technology,advanced equipments,also near 40 years manufacturing experience and 100 tons output per month which assure a competitive price,good quality and perfect service and can finish your order on ...