1Excellent suitcase packing, alloy shell, high hardness, corrosion resistance. 2Double pen configuration to enhance your work efficiency and accuracy. 3Uses the electrolysis method, the metal is processed into a liquid attached to the jewelry, forming a thin layer of gold, not easy to fade. 4Gold dissolving equipment, used for gold - plated thin layer for jewelry. 5Suitable for jewelry tools, watches and eyeglasses tools, widely used.