... cone ,D cone used with B form tie and rib washer to fix formwork in building ... manufacturer of construction formwork accessories and building fastener such as form tie,plastic cone,B-cone,D-cone,inner unit, ... D-form tie,pin,wedge,wedge pin,form tie,B-cone,D-cone,hex nut,flat tie ,wall tie ... anchor bolt,chain roller,implosion nut ,cutting wire and other non-standard fastener most of them are used ...