Nrog cov kev paub dhau los ntawm kev tsim cov phau ntawv hoists rau ntau tshaj 40 xyoo, peb tau muaj cov cuab yeej ntsuas zoo tshaj plaws thiab cov cuab yeej siv siab tshaj plaws, suav nrog xya lub khoos phis tawj tswj hwm rau lub zog siab chains tuaj ntawm lub teb chaws Yelemees thiab Ltalis, thiab lwm yam tsis siv neeg thiab semiautomatic digital tswj tshuab. Peb cov khoom tseem ceeb yog ntau yam qauv ntawm cov saw blocks, lever blocks, trolley thiab siab zog chains nrog rau cov saw sib dhos. Raws li ib qho ntawm cov tuam txhab loj tshaj plaws ntawm Tuam Tshoj blocks nyob rau hauv Suav teb, peb tam sim no ntau lawm rau saw blocks tau mus txog 200,000 teeb thiab siab zog chains 1,000,000 meters hauv ib xyoos .
Yog tias koj xav tau, peb tuaj yeem muab kev pabcuam ib-nres nqa cov cuab yeej rau koj.
