Blowing agent can be used in oil field, concrete, rubber, ... surface activity. No surfactant effect, we can not make foam, and it can not become a foaming agent, surface ... diffluence, effectively reducing the loss of layer, and can prevent the formation contaminant. The product is mainly used ... fracturing fluids, acidizing fluid, etc.2. The product can also be used for concrete, with good performance. 3. ...