1.Capacity from 0.5t to 50t 2.Got certificate of CE 3.Have certificate of ISO9001 4.Automatic double-pawl braking system 5.Gear: by adopting Japanese technology,they are innovated symmetrical arrayed high -speed synchronous gears, and are made from international standard gear steel.Compared with common gears ,they are more wearable and steadier, and more laborsaving. 6.Chain: adopts high strength chain and high precision welding technology,meet ISO3077-1984 international standard;fits for gusty overload work conditions;takes your hands a better feeling multi-angle operation. 7.Hook: made of high-class alloy steel,it has high strength and high security; by using new design,weight will never escape. 8.Components:main components are all made of high-class alloy steel,with high precision and security. 9. Framework: slight design and more beautiful; with less weight and smaller work area. 10. Plastic Plating: by adopting advanced plastic plating technology inside and outside,it looks like a new one after years of operation. 11.Encloser: made of high-classed steel,more firmly and dexterous.