BJX-20/4（I型）,BJX-20/8（II型）,BJX-20/16（III型）,BJX-20/24（IV型）,BJX-20/36（V型）,防爆接线箱（I BJX-20/4（I型）,BJX-20/8（II型）,BJX-20/16（III型）,BJX-20/ 图片

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