Ensure they follow ANSI A300 pruning standards and Z133 security requirements, suggesting market best practices.

https://wiki-tonic.win/index.php/Tree_Care_101:_Must-Know_Choices_for_Working_With_a_Professional_Tree_Service_in_Columbus,_OH_62613

Ensure they follow ANSI A300 pruning standards and Z133 security requirements, suggesting market finest practices.