The bonding agent is one of the most important auxiliary materials and is widely used in packaging operations. Adhesives are viscous materials that bond two separate materials together by virtue of their adhesive properties. There are many types of adhesives. Ball Valve Design,Ball Valve Manufacturer,Trunnion Mounted Ball Valve,Valve Ball Jiekelong Precision Manufacturing Co., Ltd. , http://www.nbcoupling.com
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What is the adhesive?