... achieves 95%, and prevent the oil liquid gas;5)Suitable for textile, mining, construction, electronic, food processing, cement, disintegration, agriculture, ... farm garden, cleaning, etc, workshops.6) Lead time:For sample mask, the lead time is 3-5 days ... ;For mass production, the lead time is 20-30 days, ... 28 CMG.W./N.W.: 75./5.5 KG CE Certified Mask