1. Avoid contact with "gold" directly with your hands, especially the gold and silver commemorative coins. Once you open the transparent plastic bag that comes from the factory, it will make the coin face contact with the air. Oxidation reaction. When touching, put on thin gloves as much as possible, use your thumb and index finger to pinch the edges of the product to prevent sweat staining the surface of the collection. . Avoid contact with gold products with saliva. Especially when appreciating the collection, do not speak to the collection, so as not to splash droplets, and chemical changes in the surface layer of gold and silver strips and commemorative medals. . Avoid placing gold products in special climate and environment, but should be stored in ventilation, dryness, moisture -proof, and the environmental temperature should not be too high.
1. Avoid contact with "gold" directly with your hands, especially the gold and silver commemorative coins. Once you open the transparent plastic bag that comes from the factory, it will make the coin face contact with the air. Oxidation reaction. When touching, put on thin gloves as much as possible, use your thumb and index finger to pinch the edges of the product to prevent sweat staining the surface of the collection.
. Avoid contact with gold products with saliva. Especially when appreciating the collection, do not speak to the collection, so as not to splash droplets, and chemical changes in the surface layer of gold and silver strips and commemorative medals.
. Avoid placing gold products in special climate and environment, but should be stored in ventilation, dryness, moisture -proof, and the environmental temperature should not be too high.