Zhejiang Taisheng Fastener Co.,Ltd  was located in Wenzhou city  , possess full sets of world leading fasteners manufactureing equipments . We can supply with excellent quality and reasonable price ,the grade have 4.8,8.8,10.9,12.9.Pls view www.wztaisheng.com if need more detail information .Besides ,we would like to send samples for your evalation . It?ll be greatly honored to work for you if we can have an opportunity. Please don?t hesitate to contact us when you have any inquiries or requirements in your any free time