passenger hoist worm wheel 1,brand: Alimak, GJJ, JINGLONG, BAODA, JIANGLU. 2,speed rate: 1:16, 1:14, 1:10. 3,COPPER passenger hoist worm wheel1,brand: Alimak, GJJ, JINGLONG, BAODA, JIANGLU.2,speed rate: 1:16, 1:14, 1:10.3,COPPER SC200/200 passenger hoist worm wheel