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Tested, in 5 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 3 times, is the ordinary silver mirror 9 times, aluminium mirrors 27 times, the mirror surface is more translucent. Multi-layer protection, more durable. High quality 5mm silver mirror with higher clarity. Give you a full range of visual experience. Ultra trathin aluminum frame, 0.3 cm front and 1.4 cm side.
