Khoom noj khoom haus additives feem ntau yog tsim los ntawm chemical synthesis.
Ua ntej, cov kws tshawb fawb tau rho tawm lub hom phiaj cov khoom xyaw los ntawm cov khoom noj ntuj thiab txiav txim siab lawv cov qauv thiab muaj pes tsawg leeg los ntawm kev tshuaj xyuas tshuaj.
Tom ntej no, cov kws tshawb fawb tau tsim cov khoom noj ntxiv uas siv cov ntaub ntawv no los ntawm cov tshuaj tiv thaiv.
Thaum lub sij hawm txheej txheem synthesis, nruj kev nyab xeeb thiab ib puag ncig kev ntsuam xyuas raug ua.
Thaum kawg, tom qab dhau tag nrho cov txheej txheem tsim nyog, cov khoom noj khoom haus tau pom zoo rau kev tsim khoom lag luam.
