Because the price of hot water boilers is much lower than that of steam boilers, there is an upward trend in some factories which do not need high temperature drying and have a small amount of drying.
Ngoba intengo yamanzi boilers ezishisayo lingaphansi kakhulu kunalelo umusi boilers, kukhona kuyibika phezulu kwezinye izimboni akudingeki lokushisa eliphezulu omiswe bese abe esincane omiswe.