*gentle handling is recommended. * for long-term use, it should be kept away from chemicals such as water, perfume, cream. * storing metal parts in humid, non-humid (bony, etc.) environments prolongs the life of the product. *if our boxed products are returned, they must be sent with the box. * in case of returning our boxed products, under no circumstances should labels, bands, etc. be placed on the box. materials must not be glued. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.