acl is a large machinery group specializing in manufacturing machine tools and equipment used in sheet forming, duct making, building material producing etc. acl machinery group consists of american acl company, guangzhou lifeng machinery co., nanhai lifeng machinery co., ltd, nanhai lifeng machine tool co., ltd., guangzhou huadu lifeng machinery factory, pinzhou lifeng machinery co., lifeng hvac machinery co., lifeng tool co., and lifeng hvac machinery association