In recent years, various countries have developed different uses of polypropylene (PP) foam products, but they are mainly used in automobile, packaging, food and other industries. At present, Zhengda (China) Sporting Goods Co., Ltd. Join hands with Fujian Institute of light industry, to develop new type. Foaming medium sole for shoes "Modified polypropylene foam shoes with medium bottom material", it is reported that this is the first time in China to use block copolymer polypropylene as the main raw material to produce foam foam sole material.

Xu Linfang, PR media manager of Zhengda sporting goods Co., Ltd., said: "at present, PP biodegradable green materials technology The invention patent of international PCT has been declared. It has excellent resilience, tear resistance and compression deformation properties and light material. It is the sole material developed by Zhengda.

It is reported that this new achievement has been widely introduced by Zhengda Company. "2010 main push". Rocking shoes This is the sole material. Xu Linfang said, "rocking shoes" is a pair of shoes that allow wearers to feel the fun of wobbling movement anytime and anywhere. Not only sole material is unique, but also the sole design has adopted a new ergonomics, and a distinctive power hull shoe wedge has been designed to ensure that the wearer can effectively achieve the function of swaying and shaping in the course of walking, and has many functions such as comfort, body building, health care and so on.