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1. During the decoration of the house, please use a plastic bag (do not touch the rubber surface of the self-adhesive tape with the surface of the lock) to seal the exposed parts such as the handle and panel of the lock, so as to avoid the surface treatment layer of the lock parts from being damaged during the decoration. The erosion of acidic or alkaline materials and gases will cause spots, blisters and even delamination, which will seriously affect the appearance and quality of locks. Some zinc alloy and copper locks will have "spots" after being installed on the door for a long time. This phenomenon is not rust, but oxidation. If this happens, just spray it with wax on the surface Spots can be removed.
2. During normal use, if there is dirt, it can be removed with a dry cloth, and do not scrub with chemicals such as detergent. Otherwise, it will damage the protective film of exposed parts and cause fading. Do not wipe the lock body and handle with a damp cloth, because some metal locks will rust; alloy locks will wear off the coating and lose their aesthetic effect.