Fully automatic fuel steam boiler LSH50-0.4-D/G, LHS100-0.4- ... /G, LHS300-0.4(0.7)-D/G, Fully automatic fuel steam boilerLHS500-0.4(0.7)-D/G,LHS750-0 ... , gigantic combustion room (large heating area),full combustion, fine heat-transfer results, it lifts the boiler heat efficiency and reaches to ...