Chenyue Company Introduction:Ningbo Chenyue International Co., Ltd, is located in Cixi, where is neighbor to Ningbo and Shanghai port. A stress ball is a malleable toy, usually not more than 7 cm in diameter, which is squeezed in the hand and manipulated by the fingers, ostensibly to relieve stress and muscle tension or to exercise the muscles of the hand.Despite the name, many stress balls are not spherical. Some are molded in amusing shapes, and pad- or transfer-printed with corporate logos. They may be presented to employees and clients of companies as promotional gifts. Stress balls are one of the most popular promotional gifts in the world. Because of the many non-spherical shapes now available, stress balls are generically known as stress relievers.There are several different types of stress balls that originate from many different countries. Some stress relievers are made from closed-cell polyurethane foam rubber. These are made by injecting the liquid components of the foam into a mold. The resulting chemical reaction creates carbon dioxide bubbles as a byproduct, which in turn creates the foam.With 9 years experience in PU stress ball industry, we are good partner with professional, competitive price, top quality, on-time delivery, we are hoping establish long-term business relationship with you. Welcome for any inquiry all the time!Let's start to work together.