Hauv kev siv tsheb kho lub cev, cov khau nres yog cov khoom siv nres tsheb, thiab lawv cov ntaub ntawv hauv kev tshawb fawb muaj ntau yam, muab cov ntaub ntawv siv ntau ntxiv, muab cov ntaub ntawv siv rau kev lag luam kev lag luam thiab Cov neeg siv khoom .
Kev tshem tawm cov khoom lag luam asbestos
In the early days, brake shoes were mostly made of asbestos because of their low cost and good friction performance. However, asbestos fibers are extremely harmful to human health, and long-term exposure may cause diseases such as lung cancer. Since the late 20th century, most countries in the world have banned the use of asbestos materials and turned to safer alternatives.
PIG DAIM NTAWV THOV NTAWM SEMI-METALIC NTAUB NTAWV
Niaj hnub no cov khoom siv tsis zoo, tsim nyog rau cov khoom siv hluav taws xob hnyav maj mam hloov los ntawm lwm cov ntaub ntawv nyob rau hauv ib nrab-rau-siab-kawg-kawg cov neeg caij tsheb caij tsheb {}}
Sawv ntawm cov khoom siv ceramic
Cov khoom siv khau tau nrov nrov, tshwj xeeb tshaj yog cov neeg caij tsheb ua haujlwm, thiab cov khoom lag luam tsis muaj zog thiab tsis muaj txiaj ntsig} Txawm li cas los xij, lawv tus nqi yog qhov siab thiab lawv yog Mas siv nyob rau hauv cov qauv nrog cov kev xav tau siab rau kev nplij siab thiab nyob ntsiag to.
Kev xaiv cov khoom siv hauv cov organic
Organic nres khau yog tsuas yog siv tau ntawm cob, roj hmab thiab cov khoom siv tsis muaj zog yog cov khoom siv tsis muaj zog, thiab lawv feem ntau yog siv rau cov khoom siv tsis muaj txiaj ntsig zoo rau kev siv cov nplua nuj los txo ib puag ncig kev cuam tshuam .
Yav Tom Ntej Cov Qauv Hauv Cov Khoom Xaiv
Nyob rau hauv lub neej yav tom ntej, nres cov ntaub ntawv cov ntaub ntawv uas muaj kev tiv thaiv kom muaj zog ntxiv, thiab cov khoom siv plua plav tsis zoo thiab cov kev tsim kho thiab kev txhim kho ntawm cov kev tshawb fawb thiab kev txhim kho.
Xaiv cov nres khau uas yuav tsum muaj kev txiav txim siab txog cov khoom sib txawv thiab ua kom muaj kev nyab xeeb thiab ntseeg tau ntawm lub kaw lus nres.
