The durability of Shanghai cam dividers depends on many factors, including the materials used, manufacturing process and quality control. Generally speaking, as one of China's economic centers, Shanghai has advanced manufacturing equipment and technology, and the cam dividers manufactured are usually of high quality and durability.

However, the durability of the cam divider is also affected by the conditions of use and maintenance. If the cam divider is used and maintained properly under normal operating conditions, it can usually reach the expected service life. However, if it is in a harsh working environment for a long time, or lacks timely maintenance and repair, the durability of the cam divider may decrease.

To ensure the durability of the cam divider, it is recommended to choose a manufacturer with a good reputation and follow normal use and maintenance guidelines. Depending on the specific use, the manufacturer usually provides relevant warranty and after-sales service to ensure the service life and performance of the cam divider.

In general, Shanghai cam dividers have a high level in terms of materials, manufacturing processes and quality control, but the ultimate durability still needs to consider the combined influence of multiple factors.