handling; treatment; management; service
Broad noun covering how something or someone is dealt with: physical handling, customer service, operation of equipment, or administrative management.
この製品の取り扱いには注意が必要です。
Care is needed when handling this product.
That shop treats its customers politely.
The handling of the documents has been left to him.
Please be careful when handling this machine.
This store carries that product.
They discontinued handling that product.
I learned how to handle hazardous materials.