1.This product can be used for nonferro metal factory 2.In the nonferro metal cast factory, or nonferro refine factory 3.MOQ:1 This product can be used for nonferrous metal factory.In the nonferro metal cast factory, or nonferro refine factory,they use such coal gas producer as the assistant combustion can save money also easy operated.This product can be used in machinery, smelt metal, ...