How is the POS machine sleeve vulcanized? Let's take the D210POS set as an example. Each POS machine cover has a fixed mold. We install the mold on the vulcanization machine, and then follow the standard steps to weigh the corresponding grams of silica gel, put them in the mold, and then vulcanize. After high temperature vulcanization molding, the POS machine cover can be removed from the mold for subsequent steps.