Ningbo yinzhou universal fasteners factory specialized production
enterprise for fasteners.Ningbo Fastener Factory universal structure
of DIN (German system), BS (British system), ANSI (American), GB
(Nations) and various categories of non-standard parts, rivets and
hundreds of varieties.Leading products for a variety of hex bolts, hex
bolts, flange bolts, carriage bolts and square head bolts. Product
intensity level 4.8,6.8,8.8,10.9 and 12.9.