With 16 years of R&D, we have mastered multiple packaging solutions for ultra-fine powders, including conductive graphite, acetylene black, carbon nanoparticles, graphene, fumed silica, nano calcium carbonate, aluminum hydroxide, and magnesium hydroxide. Our vacuum valve bag packaging machine (model JKF-159C) is ideal for powders with high gas content and low bulk density. It uses vacuum suction to fill the bag inside a sealed chamber, while gas escapes through the bag pores. When the preset weight is reached, the vacuum stops and the chamber opens for easy bag removal. The process ensures no dust spill, high compression, neat bag shape, and smaller bag size.