... of Chinese prickly ash ,chili powder, pepper purified ,cotton feather, feather terrier, straw wheat ,bran rice ,hull stick ,wood potato ... machinery.3.Structure and principle of wood powder machine Wood powder machine is made by the body ,middle body,under ... operate and maintain.5.Technical Parameters of wood powder machine Model50070080090010001200Fineness(microns)20-18040-20040-23040-32540-32540- ...