HRSS-150S Kov Screen Rockwell & Superficial Rockwell Hardness Tester

Lus piav qhia luv luv:

1.Kev ntseeg tau zoo, kev ua haujlwm zoo heev thiab saib yooj yim;

2.Rockwell & Superficial Rockwell

3. Tsav-tsav

4. tuaj yeem txuas PC rau cov zis

5. Hloov sib txawv hardness nplai;