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Tungsten filament leads the new direction of technological transformation

Sep 18,2025

Under the global dual carbon goals, the installation demand for the photovoltaic industry is expected to remain prosperous in the long term. The neutral forecast is that the global new photovoltaic installed capacity will reach 1,214.4 GW in 2030, corresponding to a CAGR of 24.5% from 2021 to 2030. Under the long-term prosperous trend, the output of silicon wafers has continued to increase. The CAGR of silicon wafer output from 2013 to 2021 was 25.0%. The strong demand for downstream installations will be passed on to silicon wafer production, and the output of silicon wafers is expected to continue to increase. The consumable properties of diamond wire are obvious, directly benefiting from the growth in silicon wafer production and the trend of thinning wires. On the one hand, diamond wire has prominent consumable attributes. The output of silicon wafers directly affects the demand for diamond wire, and the growth potential of the industry is prominent. On the other hand, the trend of thinning leads to the development of fine wire, and the weakening of cutting capacity further increases wire consumption. The demand elasticity of diamond wire may be better than the growth of silicon wafer production. Taking into account the increase in silicon wafer production and the technological transformation towards fine wires, we estimate that the demand for diamond wires is expected to reach 140.17 million kilometers and 217.73 million kilometers in 2022-2023, representing year-on-year growth of 82.7% and 55.3% respectively.