Customer satisfaction is the core of all our service. 24 Hours online customer service

[email protected] 60s quick online response

  1. Home
  2. Build Gold Testing Machine

Build Gold Testing Machine

Testing for gold with acid focuses on the fact that gold is a noble metal which is resistant to change by corrosion, oxidation, or acid. The acid test for gold is to rub the gold-colored item on black stone, which will leave an easily visible mark. Get price. Testing Dirt for Placer Gold · How to do accurate testing for placer gold.

Send Email:[email protected]

Leave Comments Chat Online

Hot Articles

focus on sand and aggregate information. Focus on industry trends, focus on information value, and tap business opportunities in the era.

Latest blog

focus on sand and aggregate information. Focus on industry trends, focus on information value, and tap business opportunities in the era.