Nta

·Vaj huam sib luag yog ABS cov khoom siv rau engineering, siab zog, tsis txhob hloov xim, cov khoom pob tshab yog PC;

·Npog thawb-hom qhib thiab kaw

Lub ntsej muag npog ntawm lub thawv xa khoom siv lub laub hom qhib thiab kaw hom, lub ntsej muag lub ntsej muag tuaj yeem qhib los ntawm kev nias maj mam, tus kheej-locking qhov chaw khawm pob khawm yog muab thaum qhib;

·Kev tsim cov kab hluav taws xob ntawm lub thawv xa hluav taws xob

Daim ntawv qhia kev tsheb nqaj hlau txhawb nqa tuaj yeem nqa mus rau qhov siab tshaj plaws txav tau, nws tsis txwv los ntawm qhov chaw nqaim ntxiv thaum txhim kho cov hlau. Txhawm rau txhim kho tau yooj yim, qhov hloov ntawm lub thawv xa khoom yog teeb tsa nrog cov xaim zawj thiab cov xaim yeeb nkab tawm-qhov, uas yooj yim rau siv rau ntau yam ntawm cov hlau grooves thiab cov kav hlau.