a, Cov khoom tsim yog tshwj xeeb, tus qauv tsim muaj ntau haiv neeg, cov roj hmab tsis sib xws logo tuaj yeem dai, lub logo ntawm cov ntawv luam tawm tuaj yeem tsim, xim yog vivid, tus qauv tsim kom pom tseeb, daim duab yog tiag tiag.
b, Kev rwb thaiv tsev tsis yog qhov zoo, thiab nws yooj yim tsis tau tawm ntawm cov ntiv tes.
c, noj qab nyob zoo thiab ib puag ncig tus phooj ywg, tsis muaj ntxhiab tsw, av qeeg resistant, pwm resistant, tshuaj pleev thaiv hnub, hnav resistant thiab nplua, laus resistant, corrosion resistant, ntev ntev;
d, elegant thiab zoo nkauj, mos thiab xis, tuaj yeem muab tso rau ntawm nws tus kheej, soundproof yog insulated thiab yooj yim los ntxuav (tuaj yeem ntxuav nrog dej tshiab thiab siv tau dua);
f, qhov loj ntawm cov duab tuaj yeem ua qia dub, lub zog tsim kua muag yog siab, qhov flatness yog qhov zoo, qhov kub tsis kam yog siab;