The performance of single-core multi-layer fiber tennis wire is similar to that of single-core single-layer fiber tennis wire, but its durability and ball eating performance are better.

The complex string structure mentioned in the tennis string refers not to the section structure of the tennis string, but to the string-through structure. Usually, the stronger string is worn on the vertical string, and then the nylon string or natural gut string with good feeling is worn on the horizontal string. This string-through structure is not only durable, but also has good ball feeling.