难燃 meaning in Chinese

flame resisting

Extractable ventilation rubber ducting of the fire retardant
抽出式难燃橡胶导风筒
Test method of difficult - flammability for building materials
建筑材料难燃性试验方法
Guidelines for use of fire - resistant hydraulic fluids
难燃液压液使用导则
V - belts - specification of the fire - resistivity and the test method
带难燃性规范和试验方法
Frame retardant conveyor belts for general use
一般用途难燃输送带

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