Type BM1, BJW and BJF4 air circuit breaker is used widely in China's metallurgical industry.

东芝BM 1系列、BJF4系列、BJW系列空气断路器在我国的冶金行业中使用较多。

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Type BM1, BJW and BJF4 air circuit breaker is used widely in China's metallurgical industry.

东芝BM 1系列、BJF4系列、BJW系列空气断路器在我国的冶金行业中使用较多。

youdao