... is professionally manufactured by Shanghai Bosun Abrasive Co., Ltd in china mainland, with 23 years' experince in abrasive field.Size:G10,G12 ... . is a professional abrasive company, which can research, produce and sell all kinds of abrasives. The main products include all kinds ... has sold to more than 20 provinces and cities of China, and exported to the United States, Canada, European countries and ...