2 Exterior panel member fastening devices shall be corrosion resistant, non-metallic material.
2 Exterior panel member fastening devices shall be corrosion resistant, non-metallic material.
外部连接装置都需抗化学腐蚀，非金属材料。
2 Exterior panel member fastening devices shall be corrosion resistant, non-metallic material.
外部连接装置都需抗化学腐蚀，非金属材料。