What brand of foaming agent is good?

There are many kinds of foaming agents in the market with different quality. For example, Rudong, Sanle, Cournot, Fengjing, Haohai, Tianyuan, Yuzhong and Antai are all famous brands. They won't cut corners and add powder to the glue, which is more environmentally friendly, with guaranteed quality and good filling effect. It can be used with confidence after being tested by consumers.