Core Viewpoint - The article discusses the current state of the A-share market, particularly focusing on the "Yizhongtian" stocks, which are heavily influenced by AI computing power and have seen significant price increases. The article raises questions about whether these stocks are overvalued or undervalued and how investors should respond to the high valuations [1][2]. Industry Trends - The competition in AI computing power is not only about GPU capabilities but also about data transmission efficiency, where optical modules play a crucial role. The article compares GPUs to top chefs and optical modules to waitstaff, emphasizing the importance of efficient data transfer [2]. - The demand for optical modules is expected to rise due to the rapid development of AI, leading to upgrades in transmission speeds. The transition from 400Gb/s to 800Gb/s optical modules is already reflected in the performance of "Yizhongtian" stocks [3][5]. Performance Metrics - In the first half of 2025, the revenue and profit growth of key companies in the optical module sector were significant. For instance, Xinyi Sheng reported a revenue of 10.44 billion yuan, a year-on-year increase of 282.64%, while Zhongji Xuchuang's revenue was 14.79 billion yuan, up 36.95% [4]. - The sales volume of optical modules also showed strong growth, with Zhongji Xuchuang selling 9.05 million units, a 45.96% increase, and Xinyi Sheng selling 6.95 million units, a 112.53% increase [9]. Capital Expenditure Trends - Major tech companies are significantly increasing their capital expenditures, with a 69% year-on-year increase in Q2 2025, totaling $87.4 billion. This trend is expected to continue, with projected capital expenditures for major cloud providers reaching $333.8 billion in 2025 [10][11]. - Chinese internet giants are also ramping up their capital expenditures, with a 99.38% year-on-year increase in Q1 2025, totaling 55.01 billion yuan [11]. Future Projections - The market for 800G and 1.6T optical modules is expected to grow rapidly, with predictions indicating that the overall market size will exceed $22 billion by 2030 [5]. - By 2026, the performance of 1.6T optical modules is anticipated to start reflecting in the financial results of companies in the sector [8]. Valuation Considerations - Analysts have incorporated the expected performance from 1.6T optical modules and increased capital expenditures into their 2026 earnings forecasts, predicting significant profit growth for companies like Zhongji Xuchuang and Xinyi Sheng [16]. - The article suggests that the current market environment may allow for higher valuations, with a reasonable price-to-earnings (P/E) ratio for "Yizhongtian" stocks estimated between 30-40 times, potentially increasing to 40-50 times if liquidity improves [18][19].