HP-DHK yakatevedzana kaviri-layer preheating yekukanya muchina (Invention patent Nhamba: ZL 2009 1 0014580.9) inopeta kaviri kugona kwekugadzira, inochengetedza makumi mashanu muzana emagetsi, uye 50% yekudyara michina. Muna 2009, yakatenderwa neChina Carbon Industry Association, iyo inozivikanwa Shenyang Aluminium Magnesium Design Institute Co., Ltd., Guiyang Aluminium Magnesium Dhizaini uye Research Institute Co., Ltd., uye akati wandei epamba anozivikanwa kabhoni nyanzvi kuti atore chikamu mukuongororwa kwepurovhinzi nehushumiri hwesainzi uye tekinoroji kubudirira.Iyo kaviri-layer preheating kneader ndiyo yekutanga yerudzi rwayo mudzimba nekune dzimwe nyika, ichisvika kune yepasirese inotungamira nhanho yezvigadzirwa zvakafanana.