... the machine easy to operate .Second , after sales service and technical guidance assure our customer trouble free service of the ... as the main heat source, coal as the assisstant, including honeycomb briquette,eggette,coal cake,charcoal,liquefied gas,etc. Also it ... . Two-heating pipe, two-wetting, double switch control heating and humidifying system.6. Saving Electricity: 50% saved compared with ...