上海樹信儀器儀表有限公司
主營產(chǎn)品: 儀器儀表 |
上海樹信儀器儀表有限公司
主營產(chǎn)品: 儀器儀表 |
參考價 | 面議 |
That degree of hardness accounts to be applicable to the black metals and have the Rockwell surname degree of hardness measurement of the color metals.It is extensive to be applicable to factory car with calculate the section.