... ISO9001:2008 certification. Introduction Biogas boiler has two series hot water boiler and steam boiler. Combustion system has automatic ... the wastewater treatment of farm, abattoir, winery, paper mill, beverage factory, starch factory, has several series, burn biogas, ... belongs to Green Environmental Production. Can used for heating and hot water. 2. Use automatic combustor, automatic windsweeper and ...