Green House Boiler 1.Sufficient output and thermal efficiency 2.Long ... easy to adjust DZL Coal Fired Hot Water Boiler for Green House:Characteristics of the boiler:1. Lower fuel consumption.2. ... in the weave factory, printing and dying, papermaking, and rubber, plastic chemical, pharmaceutical, etc. And for heating room, bath, air ... industires etc. DZL Coal Fired Hot Water Boiler for Green House