Micro powder packing equipment usually has two types: valve type and opening type, it is adopted with technology of electronically automatic measurement, variable-feed and frequency-converted function; it can be designed to meet customer's specific requirements according to raw materials characteristics, fineness and flow ability etc. The packing machine is widely used in calcite (GCC), black carbon, talc, feldspar, kaolin, bentonite, AL(OH), carborundum, quartz, barite, food etc.