Double-Sided HASL PCB Price Hike Calculation: Pre vs. Post-Sept 2025 (Raw Materials Only, Excluding Processing Fees) Post-September 2025, the PCB industry witnessed a comprehensive surge in core raw material prices. Driven by supply-demand imbalances and macroeconomic factors, copper and tin prices soared dramatically, while key auxiliary material prepreg (PP/glass cloth) also followed an upward t...