Nyob rau hauv lub xyoo pua puv 19, cov pa roj thaum ntxov- cov kua cais feem ntau yog siv rau kev sib cais chav thiab dej, siv phaj, cylindrical, thiab cua daj cua dub, uas ua rau muaj kev sib cais tsawg thiab siv zog. Thaum pib ntawm lub xyoo pua 20th, nrog rau kev loj hlob ntawm kev lag luam roj thiab roj, roj- cov kua cais tau maj mam dhau los ua cov khoom sib cais tseem ceeb, thiab cov khoom siv thiab cov qauv tsim tau pib siv ntau dua.
Txij xyoo 1940 mus txog rau xyoo 1960, qhov kev vam meej tseem ceeb tau ua tiav hauv kev tsim thiab thev naus laus zis ntawm cov pa roj- cov kua cais tawm. Piv txwv li, kev txais yuav ntawm ntau- cov qauv txheej txheem thiab cov tshuab hluav taws xob sib cais tau txhim kho kev sib cais thiab kev siv hluav taws xob. Txij xyoo 1970 mus txog rau xyoo 1990, daim ntawv thov dav dav ntawm cov pa roj- cov kua cais tau nthuav dav ntxiv, suav nrog ntau yam kev lag luam xws li tshuaj lom neeg, tshuaj, thiab kev ua zaub mov, thiab pib tsom mus rau kev tsim cov ntaub ntawv tshiab thiab thev naus laus zis los txhim kho kev sib cais thiab txo kev siv zog.
Txij xyoo 2000 mus txog rau tam sim no, nrog rau kev txhim kho ntawm automation, kev txawj ntse, thiab cov thev naus laus zis digital, roj - cov kua cais tawm tau dhau los ua kev hloov pauv digital, siv cov chaw taws teeb saib xyuas, kuaj xyuas, thiab tswj cov thev naus laus zis, txhim kho kev ua haujlwm zoo thiab kev ntseeg siab. Xyoo 2024, Tuam Tshoj cov khoom siv roj- cov kua cais tawm tau nce mus rau 148,500 units.
