... cold and hot temperature in altiplano area.2. In players feeling, ball bounce velocity aspect, it is similar to natural lawn. ... above pitch, cement, hard sand surface etc. It is popular in long-time training, using frequently area, such as primary ... environments around. About usQingdao Shanzhong Industry Co.,LTD is founded in 2002,and is located in beautiful port city, the Olympic city-Qingdao. ...