HP-DHK raupapa rua-papanga preheating mīhini pokepoke preheating (Invention patent No.: ZL 2009 1 0014580.9) rua i te production tōtika, whakaora 50% o te hiko, me te 50% haumi taputapu.I 2009, i whakaaetia e China Carbon Industry Association, te Shenyang Aluminum Magnesium Design Institute Co., Ltd., Guiyang Aluminum Magnesium Design and Research Institute Co., Ltd., me etahi tohunga waro rongonui o te kainga ki te whai waahi ki te aromatawai i nga whakatutukitanga putaiao me te hangarau a te kawanatanga me te minita.Ko te pokepoke preheating papa-rua te tuatahi o ona momo i roto i te whare me waho, ka eke ki te taumata rangatira o te ao o nga hua rite.