Introduce of Shanghai Songjiang Group- [Patent Certificate] Manufacture of DN80 Sturdy structure metal and rubber expansion joints supplier get bellow body appearance patent. in 2020 new design of rubber expansion joints pipe weight, including appearance, waterline, inner stripe, date of production
To maintain this state. we will be 2020 new design rubber expansion below pipe weight, including appearance, waterline, inner stripe, date of production, the pressure in such aspects as material identification and made a new design, and also made the protection of intellectual property rights, Take off the hat that has long been imitated.
New appearance, including the name of Shanghai Songjiang Shock absorber Group Co., LTD., product pressure, date, material, avoid using the wrong medium, causing accidents, this is Songjiang group for customer safety consideration and intentions.
The production date can be traced back to any problems, which is also convenient for later maintenance records.
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![[Patent Certificate] Manufacture of DN80 Sturdy structure metal and rubber expansion joints supplier get bellow body appearance patent](https://www.rubber-expansion-joint.cn/wp-content/uploads/2022/06/Manufacture-of-DN80-metal-and-rubber-expansion-joints-1.jpg "[Patent Certificate] Manufacture of DN80 Sturdy structure metal and rubber expansion joints supplier get bellow body appearance patent")
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