Yes, Wuxi Penghua Company is located on the floor of Columbus Square 10 in Zong 'an New Town. They mainly do spot trading in China, mainly engaged in agricultural products, including bulk Pu 'er tea, Siraitia grosvenorii and mint in Shanghai, potatoes and radishes in Shandong Fruit and Vegetable Exchange, and Lycium barbarum in Northern Commodity Exchange.

Spot Trading in Actual Combat-Speculation Essentials is the first book written by China, the president of their company, which focuses on spot trading in China. They said that after batch printing, they would give it to all the guests who opened accounts in the actual combat network and Penghua Company for free as internal training materials and not for sale in the market.

If you want, you'd better go to their company to find out. I believe they will send you a copy.