Introduction Compact design, low headroom for wider usage. Easy mounting top hook, assembly, alloy steel with heat treatment, won t break suddenly. Able to customize embossed cover. Easy mounting chain anchor plate. High precision machining gears with higher strength, and better toughness. Dust cover on brake system, impact resistance gear cover. Double pawls brake system. High precision double load chain guide. Low Friction Bushing - low maintenance.(Caged roller bearing optional) Adopt Japanese technology ,which is the convex word process. Low-alloy steel, which is reliable and durable. Premium alloy steel grade 80 load chain, which is safe and long serving life. Smooth operation, high efficient, small hand pulling force . Double pawls, two load chain guides wheel, which are safer. Needle bearing optioned. Widely used in the nuclear station, thermal power station, etc. CE&GS certificates.