Tongchuang Purun's application for listing on the Shanghai Stock Exchange Science and Technology Innovation Board has been under inquiry. The company is engaged in the research and development, production, and sales of advanced metal materials.

On July 8th, Shanghai Tongchuang Purun New Materials Co., Ltd. (referred to as Tongchuang Purun) applied for a change in the Shanghai Stock Exchange Science and Technology Innovation Board listing review status to "inquiry received," with Guotai Haitong as the sponsoring institution and plans to raise 1.5 billion yuan. The prospectus shows that Tongchuang Purun specializes in the research, development, production, and sales of advanced metal materials, with the production capacity of electronic-grade ultra-high purity metal materials such as 4N5-6N tantalum, 7N copper, 6N aluminum, and 5N manganese. It has developed two product lines of ultra-high purity metal materials and high-purity high-performance metal materials, and has independent and controllable core technology, equipment design and development capabilities, and production processes. The company's ultra-high purity metal materials mainly include products such as ultra-high purity tantalum metal, ultra-high purity copper and alloys, and ultra-high purity aluminum and alloys, mainly serving core industries such as large-scale integrated circuits and advanced displays as essential core raw materials for sputtering targets used in thin film deposition processes. In the field of advanced displays, ultra-high purity metal materials can improve the uniformity of large-area film layers in the manufacturing process of flat panel displays, significantly improve key technical indicators such as resolution and transmittance. With the development of future high-resolution, large-size OLED and Micro-LED display technologies, advanced display panels will have higher requirements for the performance of metal materials. The company can stably produce 4N5-6N ultra-high purity tantalum for customers to produce tantalum sputtering targets. Ultra-high purity tantalum is used as a copper interconnect barrier layer material in the manufacture of large-scale integrated circuits. Its high melting point, excellent thermal stability, and inert compatibility with silicon and copper can effectively block the diffusion of copper atoms to the silicon substrate. It is the core material for barrier layers in advanced process copper interconnect wiring. The company is the only domestic enterprise that can mass produce 12-inch ultra-high purity tantalum target blanks for advanced processes, and one of the few Chinese enterprises that can mass produce 12-inch ultra-high purity copper and ultra-high purity aluminum and related alloy products. The use of the company's ultra-high purity metal materials to produce sputtering targets has been evaluated and entered production at globally leading chip fabs, with batch supply achieved to integrated circuit wafer manufacturers such as TSMC, SK Hynix, Micron, UMC, GLOBALFOUNDRIES, SMIC, SHHIC, and others, and to advanced display panel enterprises such as BOE and TCL CSOT. The company can produce large electronic-grade 6061, 5083 high-performance aluminum alloys, mainly used in sputtering target aluminum backboards, semiconductor equipment components, etc.; and a variety of high-performance die-cast aluminum alloys, widely used in new energy vehicles, aerospace, turbo compressors, computing centers, consumer electronics, and other fields. The tantalum bars and parts produced by the company have high stability and uniformity, used for the production of tantalum ring companion products in the tantalum target sputtering process. The niobium tungsten and tantalum tungsten alloy products developed by the company have good high temperature resistance and corrosion resistance characteristics, already mass-produced for the production of rocket engine nozzles, aerospace engine components, and supplied in batches to commercial aerospace enterprises such as Blue Arrow Aerospace. In 2026, it was named "Quality Advanced Supplier" by Blue Arrow Aerospace. Financially, for the fiscal years 2023, 2024, and 2025, the company achieved operating revenues of approximately 862 million yuan, 1.543 billion yuan, and 1.97 billion yuan respectively; during the same period, the net profits were approximately -41.6152 million yuan, 81.8481 million yuan, and around 179 million yuan.