HP-DHK moʻo papalua preheating kneading mīkini (Invention patent No.: ZL 2009 1 0014580.9) papalua i ka hana pono, hoola 50% o ka uila, a me 50% lako waiwai hoʻokomo. ka Shenyang Aluminum Magnesium Design Institute Co., Ltd., Guiyang Aluminum Magnesium Design and Research Institute Co., Ltd., a me kekahi mau loea kalapona kaulana kaulana e komo i ka loiloi o ka hoʻokō ʻepekema a me ka ʻenehana.ʻO ka lua-layer preheating kneader ʻo ia ka mea mua o kāna ʻano ma ka home a me nā ʻāina ʻē, a hiki i ka pae alakaʻi honua o nā huahana like.