Product name: mortar spraying machine 

Product description: 

new pole-changing Motors mortar sprayingmachine, for the latest research and development of a four gear,pole-changing Motors new create a mortar spraying machine. YL-PJ01 it is in the original machine to improve, mainly from theoutside, has improved on the gear and motor. Four double gearbefore changing into four gears, motors for pole-changingmotors.