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P,P’-oxybis(benzenesulfonyl hydrazide) blowing agent and the quiet infrastructure behind softer shoes, sealed cars, flexible insulation, and precision polymer foams
A foamed rubber strip in a car door looks like a small part, but it carries a large industrial story. A 4-meter weatherstrip on each vehicle, multiplied across nearly 96 million vehicles produced globally in 2025, becomes more than 380 million meters of sealing material in one production year. Inside that soft, closed-cell structure, the choice of blowing agent decides weight, compression...
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