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Tested, in 5% 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. The structure is safer than ordinary ones, constant voltage will not flash frequently, and the overall light effect is more 3-dimensional.
