The World Table Tennis Championships will begin, and table tennis enthusiasts from around the world will also gather in Suzhou. Recently, the Suzhou Inspection and Quarantine Bureau reminded you to be careful if you watch a game with a table tennis ball, because if you bring a game ball, you will not be able to pass the aircraft security check . Currently, table tennis balls marketed legally are classified into celluloid balls and cellulose acetate balls. Table tennis transportation produced by Celluloid has always been classified as a dangerous goods category. Because the components of the cellophane are nitrocellulose, ethanol, camphor and other flammable substances, the table tennis is classified as a flammable dangerous goods. The birth of the new material, cellulose acetate balls, gave table tennis enthusiasts a sigh of relief. The staff of the Suzhou Entry-Exit Inspection and Quarantine Bureau said: “The raw material of the new ball is an environmental protection material, which can be degraded in the soil for three years. The most important thing is that the new material ball has passed relevant tests, completely out of the ranks of dangerous goods, and can be normal in the future. transport." The Suzhou World Table Tennis Championships will be held soon. The Suzhou Inspection and Quarantine Bureau reminds companies that in the event of exporting tennis racquets or products containing cello ping-pong balls, they must use corrugated boxes that meet the packaging requirements for dangerous goods for packaging, and apply to local inspection and quarantine agencies for dangerous goods. Packaging use identification. If you are a fan and you have table tennis to watch the game, please choose to buy a cellulose acetate table tennis plane. Roller Bearings are a type of Rolling-Element Bearing that uses cylinders (rollers) to maintain the separation between the moving parts of the bearing (as opposed to using balls as the rolling element). The purpose of a roller bearing is to reduce rotational friction and support radial and axial loads. Compared to Ball Bearings, roller bearings can support heavy radial loads and limited axial loads (parallel to the shaft). They can operate at moderate to high speeds (although maximum speeds are typically below the highest speeds of ball bearings). The lubrication method must carefully considered during the design phase when using roller bearings. Roller Bearings Roller Bearings,Precision Roller Bearings,Non-Standard Roller Bearings,Rolling-Element Bearing Ningbo Ritbearing Imp & Exp Co.,Ltd. , http://www.ritbearingchina.com