伟星新材：公司第三季度防水业务的营业收入同比略有增长

Group 1 - The company announced a slight year-on-year increase in revenue from its waterproof business for the third quarter [2] - The revenue decline in the water purification business has significantly narrowed year-on-year [2] - The gross margin levels for both the waterproof and water purification businesses remained relatively stable [2]