Strong drainage resistant foam concentrates (also called anti smoke foam) adopts hydrolyzed protein as the base material and is added with high-effective stabilizer, antiseptic, hydrocarbon surface active agent, anti-freeze agent, etc. It has extremely strong drainage resistance performances with the 25% drainage time up to 30~60 minutes and excellent combustion resistant performances. The foam produced can cover the oil tanks in large area.The foam can stop volatilization of inflammable steam and also can isolate fires from inflammable substances.It can be suitable for occluding liquid of special chemical production and insulating air for a long time.

The agent shall be stored in a dry, cool and well ventilated room with the ambient temperature between –5 ~ 40℃. The shelf life is 2 years.