- The mold polishing should be done in places less dusty
and should be isolated. - Polishing tools should be used for each type of particle hit the ball differently and need to be stored in the secret place. - When polished by hand, the nuts should be placed on the polishing tool and the polishing machine, the seeds need to be placed on the details. - polishing pressure should be adjusted according to the hardness of the instruments and particle size. - With take away much of the metal polishing particles need to select the type of crude.
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