Established in 1987, Shanghai Halong Auto Co. , Ltd. Is a large- Scaled specialized factory in manufacturing auto standard in Shanghai. The company has several advanced manufacturing equipments such as Four Gongwei Haigh Speed Cold- Heading Machine. Double- Click Full- Mould Super- Length Cold- Heading machine, Punch, Appearance lathe, Imported from Taiwan, Tens of non standard pieces equipments in manufacturing kinds of super length outer six hexad angles bolts, Flannel, Inner hexad angles bolt (M6- M12)x 260, Jointing bolt, All- Sides jointing nut, Setting nut, Bolt, Self- Bolt, Compound bolt with 4. 8- 12. 9 intensity levels, Micro rigidity meter, Golden analysis and other examination devices. Thanks to our steady quality and good market reputation, Our company obtained ISO 9001(2000)