... dust mask making machine Machine Working Principle:(National Patent Products: 201020143167.0)This dust mask making machine, ... one worker with feeding and pick up the finished products, can greatly saves artificially, improve the production ... mask making machine:Finished Products:Dongguan City South Nekon Machinery Co.,LtdADD: Zengwu Industrial Area, Shipai Town, Dongguan City, Guangdong Province, ...