Online service

Mon-Sat Day: 8am to 6pm

How to find us

Zhengzhou, HeNan, China

MENU
Projects
  1. Home
  2. -
  3. Crusher
  4. -
  5. scale mineral invented bahrain

scale mineral invented bahrain

scale mineral invented bahrain

The most important dates in the history of hardness testing are as follows 1722 R A Réaumur develops a scratching of the surface of minerals using steel 1822 The Mohs scale for mineral testing is is a tenpoint scratch hardness scale in which each material can be scratched using the next harder material

Get a Quote Send Message

Copyright© 2018 machinery.All rights reserved

top
Hi,may I help you with products, price, etc?