Through taste, the freshness of the feed and its raw materials can be judged. The fresh feed and its raw materials taste better, and after storage for a certain period of time, the oil in the oil will be rancid due to the presence of free fatty acids, resulting in very poor taste. Expired feed has an unbearable stale, musty smell. At present, most biscuits are blended with rice bran, castor beans, cottonseed and other cheap oilseeds. Through the bite and tasting of the biscuits, most of the blends can be distinguished. Teeth biting and tasting can also identify the moisture content of the grain, and the dry ingredients are crispy, hard and brittle. If fishmeal, crushed corn and other raw materials are doped with sand, gravel, and chewed, they will feel tooth decay. Round nut is a kind of large fastener, which is widely used in hydraulic oil cylinder and railway internal combustion engine equipment, so the relevant performance is also important. If the round nut is of good quality, it can save the cost of locomotive maintenance and reduce the labor intensity of maintenance workers. Round Nut,Round Coupling Nut,Round Head Nut,Round Cap Nut Jiangsu Jiajie Special Screw Co., Ltd , https://www.jiajiescrewcompany.com