三川智慧：智慧水务板块主营业务是各类水表的生产、销售

Core Viewpoint - The company San Chuan Wisdom (300066) has confirmed its main business in the smart water sector, focusing on the production and sales of various types of water meters, including NB-IoT smart water meters, ultrasonic water meters, and electromagnetic water meters [1] Group 1 - The main business of the company is the production and sales of water meters [1] - The product range includes water meters with diameters from DN15 to DN300 [1] - The water meters are suitable for various applications in water flow measurement [1]