... you can printing directly, don't need to do any pretreatment. B. we have the best ... successful case, our our sales will guide you how to start your bussiness. like where should ... , ceramic, metal, paper, leather, wood 3.Do i need to do some pretreatment or aftertreatment ?no, you don't ... object thickness20cm Max. print size 21cm*29.7cm Voltage/Power consumption110V or 220V / 30WCooperate with us , you ...