20 xyoo kev paub hauv daim teb no

Mineral kev lag luam

Minerals xws li cement, txiv qaub, xuab zeb tshauv, alunite feem ntau muaj cov yam ntxwv ntawm ntxhib thiab siab hardness.Thaum rotary valve yog siv los thauj txhua yam ntawm cov khoom siv ntxhia, nws tso siab rau cov kev xav tau siab dua rau cov cuab yeej siv zog thiab hnav tsis kam.Hauv 20 xyoo dhau los, peb tau mob siab rau peb tus kheej rau kev tshawb fawb tshwj xeeb ntawm cov ntaub ntawv hnav-tiv taus thiab hnav-tiv taus cov ntsaws ruaj ruaj, teeb tsa lub chaw soj ntsuam sab hauv ntawm cov cuab yeej siv, thiab tau ua ntau yam kev tshawb fawb thiab kev sim, xws li hnav tsis kam. ntawm ntau yam khoom siv sib txawv ntawm cov khoom siv sib txawv, cov khoom siv alloy kuaj, hnav-tiv thaiv txheej kuaj ntawm cov phab ntsa sab hauv ntawm cov khoom siv, thiab lwm yam. Qee qhov ntawm peb cov kev ua tiav tau txais daim ntawv pov thawj patent hauv tebchaws, thiab peb cov khoom tau ua pov thawj lawv cov txiaj ntsig thiab kev ntseeg siab hauv kev siv tswv yim. .


Post lub sij hawm: Lub Xya hli ntuj-13-2021