Reported from Chengdu on September 12, 2025
Against the backdrop of a 14% year-on-year decline in overall profits in the silicone industry, deep processing enterprises represented by Silicon Treasure Technology and Huitian New Materials have delivered impressive results. According to the semi annual report of 2025, the average gross profit margin of 12 key deep processing enterprises reached 28.7%, which is 12.4 percentage points higher than that of upstream individual enterprises, confirming the industrial law of "whoever gains the terminal gains the world".
New energy track: building a moat with technological barriers
Wang Qiang, General Manager of the Power Battery Adhesive Business Unit of Silicon Treasure Technology, presented a set of data to reporters: In the first half of 2025, the company's supply of thermal conductive adhesive to CATL and BYD increased by 210% year-on-year, and the gross profit margin of a single category remained above 35%. Our secret lies in molecular structure design, "Wang Qiang pointed to the quantum computing simulation screen in the laboratory and explained. By regulating the branching degree of the siloxane main chain, colloids can maintain a deformation rate of less than 0.1% in the range of -40 ℃ to 180 ℃. This technology has applied for 17 international patents.
In the field of photovoltaics, the double glass module encapsulation adhesive developed by Huitian New Materials has achieved a significant breakthrough. The light transmittance of this product reaches 93.2%, which is 8 percentage points higher than traditional EVA film. In the aging test under 85 ℃ and 85% humidity environment, the adhesive strength attenuation rate is less than 5%. With this technology, Huitian New Materials occupies 41% of the domestic double glass module adhesive market, and the revenue of photovoltaic adhesive business is expected to exceed 1.8 billion yuan by 2025.
Semiconductor Packaging: Accelerating Import Substitution
In the Eken Organic Silicon (Shanghai) Laboratory, R&D Director Chen Lin is debugging the newly introduced Atomic Layer Deposition (ALD) equipment. This equipment worth 230 million yuan will be used to produce silicon-based dielectric materials for 12 inch wafer level packaging. Our dielectric constant has stabilized below 2.8, reaching the international leading level, "Chen Lin revealed. The material has been certified by SMIC and Changjiang Storage, and its production capacity will expand to 500 tons per year by 2026.
More noteworthy is the innovative application of organosilicon in advanced packaging. The temporary bonding adhesive developed by a leading enterprise can withstand bonding temperatures above 400 ℃ and has been successfully applied in the 3D stacking process of HBM storage chips. Industry analysts point out that with the popularization of packaging technologies such as CoWoS and SoIC, the global market size of silicon-based packaging materials will exceed $8 billion by 2027, with a compound annual growth rate of 29%.
Medical Health: On the Eve of the High end Market Explosion
In the medical field, organic silicon materials are penetrating from traditional catheters and dressings to high-value consumables. The LuxSense silicone leather newly launched by Wacker Chemie achieves 99.99% antibacterial rate through nano silver ion modification technology and has been applied to the high-end monitor housing of Mindray Medical. Even more groundbreaking is the liquid silicone injection molding technology developed by a certain enterprise, which can manufacture microfluidic chips with pore sizes less than 50 microns, reducing the cost of POCT (point of care testing) equipment by 60%.
The certification period for medical grade silicone is as long as 3-5 years, but the gross profit margin is generally above 50%. "The head of the medical business unit of a listed company revealed that the implant grade silicone rubber developed by them has entered the human clinical trial stage and is expected to replace imported products by 2028, breaking the monopoly of foreign-funded enterprises such as DuPont and Shinetsu.
