Energy Save Type goods Strong material Joyro Pulley by made FCD 500 ( Normal pulley made by FC 200 - 250 ). Long life time - Occurring law temperature on pulley belt to run system - Save electronic and - Available to use the belt for long time almost 2 times ~ 10times more than normal pulley. Long Lasting life goods - - Save Labor charge as not change the system to use for long time. - Save lose money to off factory plants as need time to change the new parts. Long Lasting life goods made by strong material than regular goods. Standard packing.