Adopts the fireproof structure. Even if the soft sealing material is burned, the metal seal still takes effect.

采用防火结构，即使软密封材料烧损，金属密封仍能起到作用。

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Adopts the fireproof structure. Even if the soft sealing material is burned, the metal seal still takes effect.

采用防火结构，即使软密封材料烧损，金属密封仍能起到作用。

youdao