结构：优质镀锌板、铝合金外框，硬质胶板纸、铝箔板折叠分隔，聚氨酯密封胶密封

滤材：超细玻璃纤维滤纸

效率：99.97%, 99.997% , 99.9997%

特点：阻力低、过滤面积大、使用寿命长

Structure: high quality outside frame of galvanizing plate and aluminum

alloy, hard rubber plate paper, separated with folded aluminum

plate,sealed with polyurethane sealant

Filtering Material: superfine glass fiber filter paper

Efficiency: 99.97%, 99.997%, and 99.9997%

Characteristics: low resisrance, big filtering area, long service life