A) special features: . Materials:steel . Types of drive inserts: slotted and phillipscombination slotted and square socket,pozidrive,H-slot,slotted,Phillips recess,square socket,hexagon recess. . Types of heads:Chinese,binding,pan,truss,flat,oval,round,hexagon,hexagon washer,panwasher. . Customized specifications are welcome . Standard size and tolerance conforming to international standard DIN,ANSI and JIS,GB B) primary competitive advantages: International approvals Reasonable price Product Performance Expert in national ,special size screws C) Main Export Markets: Eastern Europe North America Mid East/Africa Asia Western Europe