Method for forming a metallic mirror surface on a receiving surface

A method for forming a metallic mirror surface on an receiving surface comprising the steps of:

• cleaning the receiving surface to be coated with a metallic mirror surface;
• spraying on the receiving surface an activating treatment agent solution wherein said an activating treatment agent solution contains a hydrochloric acid solution including about 10 cc to about 44 cc of hydrochloric acid, about 1.5 g to about 5 g of stannous chloride and about 0.001 g to about 0.005 g of a precious metal salt of at least one of a silver nitrate, palladium chloride, gold chloride and platinum chloride per 1 liter of water for use as an activating treatment agent for forming a metallic mirror surface on a receiving surface wherein said receiving surface is treated with said hydrochloric acid solution as an activating treatment agent solution;
• and
• separately spraying concurrently on the receiving surface having said activating treatment agent solution a reacting metal salt and a reducing agent to form the metallic mirror surface.