China Ningbo Honger Tools Co., Ltd. Was founded in 1980, Which is a manufacturer of hardware tool assortment and rubber seal products, hardware assortment. Strictly practiced under ISO9001 quality control system. Products of rubber seal, O ring kit, hardware tool are all superior quality and reasonable price, Especially the O type seal assortment, Which take 90% of the total alike export products in the country. Our products, hardware assortments, metric hardware assortment are used in airproofing or connectting oil, Gas of auto, moto, Tractor, Ship, Machinery and so on.