Energy-saving cars trigger price cuts

The price reduction caused by the “Energy Conservation Product Catalogue” has become increasingly fierce in the China-Vietnam automobile market in Shenyang City. It has been introduced to the whole country, and models that have not been included

Acid Meter Overview and Use Steps

A pH meter is an instrument that measures the pH of a solution. The main body of the pH meter is a precision potentiometer. When measuring, the composite electrode is inserted in the solution to be measured, different electromotive force is generated due to th