handling; treatment; management; service
Broad noun covering how something or someone is dealt with: physical handling, customer service, operation of equipment, or administrative management.
Care is needed when handling this product.
あの店は客の取り扱いが丁寧だ。
That shop treats its customers politely.
書類の取り扱いは彼に任せてある。
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.