We are SHANGHAI TONGHUI MECHANICAL CO., LTD is the key mechanical products manufacturer in china. We passed ISO9001: 2000 quality management systerm.Low price, High quality & new designs, with more than 15 years experience for production.Our products as follows:self-drilling screwself-tapping screDrywall screwChipboard screwWood screwMachine screwGalvanized roofing boltsConcrete screwsWindow screwWasherFlat washerSpring lock washerNutHex nutsNylon lock nuts, Flange nuts, Cap nutsWing nuts, Spring nuts, Hex long nutsBoltsHex head bolts[DIN933, DIN931, DIN912Carriage bolt DIN603Flat eye bolt , Hex flange head boltThread rods , 4.8 grade , 8.8 grade, 10.9 grade, 12.9 gradePrecision spring, die spring, disc spring, mechanical spring, disc spring and so on.Belt Buckles, Shoes & Handbag Accessories,Metal ButtonIf you have concerning inquiry, please do not hesitate to contact us directly.Meanwhile, we will appreciate if you could inform us detail size, finish, quantity, packing.We will quote you our best prices.Yours timely reply will be appreciatedbest regardsselina lee
