In China, the use of drying equipment has a history spanning several decades. Over the past 20 years, the industry has experienced rapid growth. Thanks to the efforts of engineers and technicians, most industrial models are now produced domestically, reversing the previous reliance on imports. This has led to the emergence of numerous manufacturers, with over 500 companies currently operating in the market, generating annual sales exceeding RMB 3 billion. In terms of volume, China is recognized as the world's largest producer of drying equipment. However, despite this scale, many domestic manufacturers still operate at low technical standards. Some lack even basic technological capabilities, leading to the proliferation of low-quality, low-cost equipment from "unknown brands." These products not only damage the overall reputation of Chinese drying equipment but also create internal price competition, which hinders the industry's overall competitiveness. A major challenge lies in the limited research and development capacity. The level of automation, appearance quality, and functional integration of Chinese drying equipment still lags significantly behind global leaders. The main issues include weak innovation capabilities and regional clustering of companies. Additionally, insufficient theoretical research remains a key bottleneck. Drying involves diverse material properties, and current equipment often fails to meet specific production needs. Theoretical studies are essential for developing new technologies, yet China lacks adequate investment in both human and material resources. While some universities and research institutions are conducting relevant work, the gap between China and countries like Denmark, Canada, and Japan remains significant. Another critical issue is the lack of proper experimental facilities. Drying is an inherently experimental process, requiring rigorous testing to refine both theory and manufacturing. However, many companies ignore the importance of experimentation. Some do not even have basic experimental setups, leading to blind design decisions based on guesswork rather than data. This problem is widespread, with many firms relying on experience and estimation rather than scientific methods. Moreover, the industry suffers from over-concentration of low-level manufacturers in certain regions, making imitation easy. Hundreds of companies often produce the same models, resulting in redundant marketing materials and a lack of innovation. Patented products are rare, and the outcome of such a situation is predictable. To break free from this cycle, independent innovation must become the core focus. This requires deep investment in fundamental research, especially in automation and control systems. While solving control problems in drying equipment is technically feasible, the real challenge lies in integrating these systems effectively with the equipment itself. Different materials demand different drying and control approaches, making it essential to develop tailored solutions that balance cost and performance. Additionally, scaling up drying equipment is complex, involving multiple disciplines such as fluid dynamics, thermodynamics, and materials science. It is not just about increasing size but understanding how variables interact during the process. Predicting potential issues and finding practical solutions require both theoretical knowledge and hands-on experience. Research into scaling effects is crucial to ensure safe and efficient industrial applications. In conclusion, while China has made great strides in producing drying equipment, true progress depends on strengthening theoretical research, improving experimental practices, and fostering genuine innovation. Only through these efforts can the industry move beyond imitation and price wars toward sustainable growth and global competitiveness.

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