HP-DHK jara ni ilopo-Layer preheating kneading ẹrọ (Invention itọsi No.: ZL 2009 1 0014580.9) sekeji awọn gbóògì ṣiṣe, fi 50% ti ina, ati 50% ohun elo idoko.In 2009, o ti a fọwọsi nipasẹ China Erogba Industry Association, awọn daradara-mọ Shenyang Aluminiomu Magnesium Design Institute Co., Ltd., Guiyang Aluminiomu Magnesium Design ati Research Institute Co., Ltd., ati ọpọlọpọ awọn abele daradara-mọ erogba amoye lati kopa ninu igbelewọn ti agbegbe ati minisita ijinle sayensi ati imo aseyori.Kneader preheating meji-Layer jẹ akọkọ ti iru rẹ ni awọn ara ile ati ni okeere, ti o de ipele asiwaju agbaye ti awọn ọja ti o jọra.