Group 1 - The core viewpoint of the article indicates that Rongjie Health (300247) is experiencing a growth trend in the sales of its cold bath machines, while sales of surfboards have declined year-on-year. However, both product categories currently represent a small portion of the company's total sales revenue [1] Group 2 - The company has responded to investor inquiries on its interactive platform regarding the sales performance of its products [1] - The sales of cold bath machines are on an upward trajectory, suggesting positive market reception [1] - The decline in surfboard sales indicates potential challenges in that product segment, although it does not significantly impact overall revenue [1]