• Compared with the prior art, the utility model has the advantages of sufficient rigidity, high-temperature resistance and non-flammability.

    实用新型已有技术相比具有有足够刚性、耐高温、不易燃的优点

    youdao

  • Compared with the prior art, the utility model has the advantages of sufficient rigidity, high-temperature resistance and non-flammability.

    实用新型已有技术相比具有有足够刚性、耐高温、不易燃的优点

    youdao

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