Excuse me, where is a shop in Guangzhou that specializes in cleaning SLR lenses?

If there is a stain in it, it will be in trouble. Things like lens pens and lens water can only be cleaned externally, not internally. Cleaning the interior requires disassembling the lens, which is precise. Even if an experienced master disassembled and cleaned the lens and put it back, it would affect the optical quality of the lens. Therefore, the disassembly and maintenance of the lens can only be completed by the original factory, not by private users.