Water-based cleaner for capacitor aluminum cases! The aluminum case is stamped out with zinc stearate powder! There are black spots along the bottom edge inside the case that won't wash off! But it co

Water-based cleaner for capacitor aluminum cases! The aluminum case is stamped out with zinc stearate powder! There are black spots along the bottom edge inside the case that won't wash off! But it comes off when you hang it with a hard object! I'm not sure if I can do it. You can try Qingdao North Star environmental protection BCQX-903 efficient environmental protection carbon cleaning agent, can clean the surface oil, carbon, glue, this cleaning agent no residue, no ignition, lighter can not be ignited, safe and environmentally friendly, after cleaning the surface does not have any residue, without other processing can be directly carried out the next step of the process, such as painting, bonding, molding and so on

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