Machinio is a global online marketplace that connects buyers and sellers of used machinery and equipment across various industries, including agriculture, construction, machine tools, material handling, printing, processing, and test, lab, and medical equipment. Their platform features a wide array of pre-owned equipment, such as used compressed natural gas (CNG) compressors from manufacturers like FuelMaker, Universal Air Products, and Greenfield. 

Machinio provides a user-friendly interface for listing and discovering surplus equipment, facilitating efficient transactions between parties worldwide.