Blowing agent can be used in oil field, concrete, rubber, plastic,fly ash, etc 1. Brief Product Introduction: ... formation contaminant. The product is mainly used for foam oil mining of tertiary oil recovery and foam sand wash. Bubble flushing, profiling ... used for concrete, with good performance. 3. Packing:1. Packing in 200kg/drum.Tianjin Hero-Land S&T Development Co., LtdADD ...