How to choose machinery and equipment?

Introduction: In recent years, China has continuously supported the development of various types of small businesses, and more and more people are transitioning from employment to entrepreneurship. Especially after college graduates, many students with id

Russian flotation reagent

First, the collector

The C-22 collector is a dark brown viscous liquid with a special odor, soluble in water, and added to the flotation process with a 1% solution. In the Czech Liske ore