中超控股：公司控股子公司主要从事220kV及以下电力电缆附件、电力金具，电缆施工机具研发、生产及销售

Group 1 - The core viewpoint of the article is that Zhongchao Holdings' subsidiary, Jiangsu Kenait Electric Cable Accessories Technology Co., Ltd., is engaged in the research, production, and sales of power cable accessories and related equipment [2] - The company specializes in products for 220kV and below power cable accessories, power fittings, and cable construction tools [2] - Kenait's products are designed to be compatible with transformers, indicating a focus on high-voltage cable system engineering [2]