Corrosion-resistant, no blackening

Tested, in five percent concentration of hydrochloric acid, more than 95 hours to react (ordinary copper-free silver mirror less than 30 hours to react) antioxidant performance than the traditional copper-free silver mirror to enhance the three times, is the ordinary silver mirror 9 times, 27 times the aluminium mirror, the mirror is more translucent, the use of the imaging is real and clear!