The down pre-treatment box (reduction box) conforms to the national GB standard, and the upper part is a movable door, surrounded by metal or plastic gauze for ventilation.
【Scope of application】 The down pre-treatment box (reduction box) conforms to the national GB standard, and the upper part is a movable door, surrounded by metal or plastic gauze for ventilation. 【Related Standards】 GB/T10288-2003, FZ/T80001-2002
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