1. Raws li cov hniav zoo, nws tuaj yeem faib ua ob hom, ib qho yog cov hniav txhuam hniav thiab lwm qhov yog cov hniav trapezoidal. Cov hniav Trapezoidal tau siv dav hauv kev lag luam tam sim no.
2. Raws li cov khoom siv, nws tuaj yeem faib ua plaub yam, 45# steel sib dhos siv log, aluminium alloy synchronous siv log, cam khwb cia hlau synchronous siv log, nylon synchronous siv log. Cov ntaub ntawv xav tau rau cov tshuab sib txawv hauv kev lag luam sib txawv kuj txawv, nyob ntawm qhov xwm txheej.
