What is the full-alloy screw, what are the advantages?

Full-alloy screw is the whole screw is the whole hardening alloy, screw from the inside out to the outside material and hardness are the same; Jin Yang's full-alloy screw is the main component of tungsten cobalt-based powder alloy (imported from Germany); using the whole hardening process , The advantages of both hardness and toughness (super wear-resistant, corrosion-resistant, high-speed, high temperature 600