the equipment has two types: full automatic and manual. the full automatic machine equipped with three automatic guns and one manual gun. the lifting of the gun and the transmission of glass are all PLC automatic control by synchronous belt transmission. the transmission is stable and durable and the fun lifting device is located outside the body. Low failure rate. Sand blasting speed: 20-30 square meter/h, sand blasting depth is customized if there is a shallow-to- deep variation.