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 color metals with the degree of hardness measurement of the nonmetal material.