HP-DHK jara ni ilopo-Layer preheating kneading ẹrọ (Invention itọsi No.: ZL 2009 1 0014580.9) ė 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.