Shanghai KangRui Electronics Co., Ltd. is a professional to process ironwork enterprise integrated by product R&D, manufacturing and sales. We have been specializing in the production of zincified knockouts (switch housings), circuit breakers and stainless cold stamping products for more than ten years, especially in knockouts.



We produce hundreds of various dimensions or styles of knockouts including 0.6mm to 1.6mm in iron thickness, with earth screw or not, with active or inactive installation fastener, with various diameters of holes and holes with trimmed or untrimmed...