... 2, in it is strictly prohibited to iron powder residual process used to sand; 3, micro powder level is very suitable ... or acrylic product of atomization aesthetic processing; 3, TV screen process in sand; 4, silicon crystal yuan of cutting; 5, ... and stone, antiques, marble tombstone, ceramics, wood, bamboo piece of etching artists. 4, pretreatment processing: TEFLON (TEFLON), PU, rubber, plastic ...