Hangzhou Tongbao Machinery Factory 1.We are a professional manufacturer in surface treatment and finishing industry.Established in 2003,located in Hangzhou China. 2.Specialized in sand blasting machine,shot blasting machine,and vibratory polishing machine. 3.We have passed the ISO9001:2000 quality system certification. 4.We can offer various sand/shot blasting equipments with high quality and competitive price in short delivery time....