How to ensure continuity in the overlap of the concentrator housing?

Good electrical continuity must be maintained between all parts of the concentrator's metal housing; otherwise, shielding effectiveness will be reduced. Methods to ensure continuity include using continuous welding instead of spot welding or screw connections. For parts that must be disassembled (such as panels), electromagnetic sealing gaskets (such as conductive foam or beryllium copper springs) should be used at the mating surfaces, with sufficient compression and contact pressure. All screw-connected mating surfaces should have their non-conductive coating removed to expose the metal. Screw spacing should be sufficiently small, generally no greater than λ/20 (approximately 15mm for the highest frequency of 1GHz), typically arranged at 5-10cm intervals. In addition to gaskets, doors should be electrically connected to the housing via hinges or specialized grounding braided tape. Internal metal mounting plates, rails, etc., should also be connected to the housing via grounding screws or conductive washers. The DC resistance between any two points should be less than 2.5mΩ.