Junlebao Dairy Group was founded in 1995, the main business is infant milk powder, low temperature liquid milk, normal temperature liquid milk, animal husbandry four sectors, the factory produces exhaust gas mainly from milk powder production line, boiler exhaust gas, including sulfur dioxide, nitrogen dioxide and other gases. It uses the ASD5300C, ASD5300 gas detector and JB-TB-ASD5100 controller.