... part of micro powder grinding mills from Shanghai Clirik Machinery Co., Ltd. the material content of grinding roller is made of abrasion ... grinding roller should be replace after some working periods. For stones, rocks with hardness above 8, the life span will ... 7x4.8x7.218x4.6x8.618x4.6x8.6Power /KW145192263263Shanghai Clirik Machinery Co., LtdAddress:No.19Fuqing Rd,Shanghai 201201,China Contact Name: ...