Town gas mainly consists of artificial gas, natural gas, liquefied petroleum gas and liquefied petroleum gas-air mixture, etc. MMD can provide reliable gas reducing station used in town gas distribution system, city gate station, conventional filtration metering skid according to customer requirements. Sound design, precise analysis, strict product manufacturing debugging can detect and measure the quality of urban gas. Pig ball receiving, sending unit, filter, metering, gas heating and pressure regulator are integrated.