天奈科技：目前公司多壁类产品盈利能力保持相对稳定

Group 1 - The core viewpoint of the article is that Tian Nai Technology maintains stable profitability for its multi-walled products, with a gross margin that is leading in the industry, and the multi-walled carbon nanotube market is expected to continue steady growth in the long term [1] Group 2 - The company has indicated that its multi-walled products have a relatively stable profitability [1] - The comprehensive gross margin of the company is at an industry-leading level [1] - The long-term outlook for the multi-walled carbon nanotube market is positive, with expectations for steady development [1]