Tej hub khoom tawg paj ntaub khoom kawm

(1) Ceramics tuaj yeem nkag rau zoo rau hauv cov iav fiber ntau cov nplai thiab cov khoom ntxiv ua kom zoo;

(2) Tsim kom muaj kev sib raug zoo nrog cov khoom siv ntxiv;

(3) Tsis muaj tshuaj lom neeg nrog cov fiber ntau thaum lub sijhawm ua khoom siv thiab siv cov txheej txheem;

(4) Tsis muaj kev puas tsuaj rau cov khoom ntawm lub cev ntawm lub fiber;

(5) zoo heev nkag kuj, cuam tshuam kuj thiab qaug zog kuj;

(6) Muaj cov tawv zoo;

(7) Tshuaj lom neeg ruaj khov, nrog rau cov khoom siv tshuaj xws li kev tiv thaiv corrosion, oxidation tsis kam, thiab noo noo tsis kam