Make sure they follow ANSI A300 pruning standards and Z133 safety standards, suggesting market finest practices.

https://star-wiki.win/index.php/Tree_Care_101:_Must-Know_Decisions_for_Employing_a_Professional_Tree_Service_in_Columbus,_OH_70157

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