Five core advantages
Alloy Steel cover anti-collision,Alloy Steel material integrated molding, thickened Anti-im-pact
G80 manganese steel chain quenching refining,Strong chain pull and high safety factor
Precision forged man- ganese steel hook,Hardened manganese steel upper and lower,hook, safe anti-off
High quality reverse,chain wheel,Fit chain to chain smooth not stuck chain
Double brake double stop, safety factor increased by more than 2 times
