※ Applicable temperature: -25 ℃ to 170 ℃; 
 ※ Features: Overcoming the problem of hardening of the original product warranty period, physical and chemical properties of stable, high temperature, service life of 5 years; 
 ※ Applications: general use bolt or a certain pressure, electrical contact parts; 
 ※ role: instead of lining of tin, silver plating process; instead of copper-aluminum transition joint; anti-corrosion, improve security; saving.