MZLH 42 wood pellet press: 1,for biomass fuel 2,ring die pellet ... drive motor 4,6mm,8mm,10mm,etc pellets MZLH 42 wood pellet press: Main structure and working principle: 1,High efficient ... gear drive, insure the biggest energy transfer;2,Cast iron gate, stainless chute, strong corrosion resistance ,long service time.3 ...