Kev siv Beryllium Copper Alloys Beryllium tooj liab feem ntau yog siv hauv cov khoom siv hluav taws xob, cov khoom siv sib txuas lus, cov khoom siv hauv computer, thiab cov khoom siv me me.Ua tib zoo saib cov cuab yeej xws li wrenches, screwdrivers, thiab hammers siv rau cov roj rigs thiab thee mines, thiab koj yuav pom tias th...
Nyeem ntxiv