HP-DHK usoro okpukpu abụọ preheating preheating igwe (Invention patent No.: ZL 2009 1 0014580.9) okpukpu abụọ mmepụta arụmọrụ, na-azọpụta 50% nke ọkụ eletrik, na 50% akụrụngwa ego.In 2009, ọ kwadoro site China Carbon Industry Association. Shenyang Aluminum Magnesium Design Institute Co., Ltd., Guiyang Aluminum Magnesium Design and Research Institute Co., Ltd., na ọtụtụ ndị ọkachamara carbon a ma ama na-esonye na nyocha nke mpaghara na minista na-ahụ maka sayensị na nkà na ụzụ.Igwe mmiri na-ekpo ọkụ okpukpu abụọ bụ nke mbụ n'ime ụlọ na mba ọzọ, na-eru ọkwa mba ụwa nke ngwaahịa ndị yiri ya.