China’s updated Building Energy Efficiency Design Standard, effective July, raises air-tightness requirements for windows by 50%. EPDM-silicone composite seals—featuring exceptional weather resistance (-60°C to 150°C) and rebound resilience—are now mandatory for high-end systems. Companies like Xingfa Group and Dongyue Group launched UV-resistant silicone products with 20-year lifespans. Tests show premium seals reduce building energy consumption by 15%. Developers report: "This ‘silicone barrier’ is inconspicuous but critical for green building certification." With accelerated building retrofits, annual demand growth is forecasted at 18%.
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