I accidentally read your question on Baidu. I can answer your question. I am a lathe worker who works in Qian Qian Princess Shoes Co., Ltd. My boyfriend works in the molding workshop and deals with soles every day. The raw rubber soles of Qian Qian Princess Shoes Co., Ltd. are of very good quality. They are soft, moderate and durable soles. My colleagues' children are all wearing Princess Qian Qian's children's shoes, and the shoes are still in good condition after being worn out.