we are a Chinese manufacturer of some kinds of construction formwork accessories (construction fastener)such as(ALcombostandardflatheadlong) pin,wedge(curvestraight) ,wedge pin,wedge bolt,scaffold coupler ,B-form tie(bolt),B-nut ,D-cone,thread rod ,wing nut ,wall tie,flat tie,iron bar,implosion nut,hex flange nut,wing nut,chain pin,expansion anchor bolt,U-clip,hook and other special fastener most of them are used in building construction to  fix formwork .we can supply them at a low price with high quality in large quantity  Skype:rainshuangfei