hat
2. rezonab teknoloji fè efikasite anwo nan syèl la ak enèji benefis. Chalè peyi kapab fèt pou tretman, convection, conduction nan eksplozif anndan yo, ak nan lakou a woulo li kapab fèt pa konbinezon de convection e conduction.
eng
2. Reasonable technology makes high efficiency and energy saving. Heat exchanging can be achieved by radiation, convection, conduction in inner roller, and in outer roller it can be achieved by combination of convection and conduction.