Different kinds of Promotional Gifts quality inspection:

Aluminum ID Card Holder
mini tools
mini tools set
finger bell
mini promotion tool set
Mini tool box
party mask
dog tag/metal dog tag
phone portable charger
silicone watch
silicone wristband
led pocket mirror
mobile phone holder
pvc fridge magnet
cap opener
baby tree
hip flask
Kids Gift
USB Drive
Festival Gift
Business Gift
Electronic Gift
Innovative Gift
Homeware Gift

Some comment factors to check:

Quantity
Varieties
Material    
Size
Color     
Logo imprint
Packing
Workmanship
Function

more information at http://www.china-qualityinspection.com/Promotional-Gifts-Ningbo-Shenzhen-Yiwu-Shantou-Xiamen.htm