currently the oil refinery

Low production costs: molding, punch a consumable device, the device uses high-strength , wear-resistant special NMB donut maker machine materials, life was 500 tons or more, the cost per ton is only about 2 yuan , the production cost is very low .
3 . Briquetting density : no electric heating, powerful impact 300 tons , the impact of the number of high-frequency 300 NMB cold oil press , the heat generated by the device itself 150 to 200 degrees , by molding the raw material aging , stereotypes die molding .