we are a professional manufacturer of fasteners in china,especially in kinds of DIN bolts. We have ourself factory with store , Only 450km from beijing and 550km from the tianjin port ,It closed The xingsteel and the hansteel ,so you are assured the price is very competitive at the high qualityOur main productions are hex bolts,**their specification is enclosed**as followsThe diam :M8-M25The length :12mm-250mmThe standard :DIN,ANSI,GBThe grade: 4.6 .6.8. 8.8.The finished: nature colour,zinc plated,or the HDGThe certification: have been approved by the ISO9001Most of our productions are exported to the india and middle east, further more, the samples are free for you test. We are manufacturer and hope have a long time and mutual benefit cooperation with you. So if any comments or suggestions ,pls let me know, i will do my best for you.