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1989年11月是月大中华橡胶厂试制成功国内第一条11R22.5无内胎钢丝子午线载重轮胎。 (nov 1, 1989 – jan 1, 0)

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1989年11月是月大中华橡胶厂试制成功国内第一条11R22.5无内胎钢丝子午线载重轮胎。

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工业大事年表

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nov 1, 1989

jan 1, 0

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