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Dressing the stone keeps the correct angle on the surface and provides a consistent valve seat surface. Once I have the stone dressed properly, a guide is inserted into the valve guide and the stone and holder is placed over the guide. The driver can be inserted into the holder and with great care, the grinding cut is performed.
LAWFIRM Heavy Industries Co., Ltd. China(Mainland)
Our products sell well all over the world, and have advanced technology in the field of crushing sand grinding powder.