Yes, you can operate, food, equipment, cosmetics, hazardous chemicals and so on.
The general process of equipment import customs declaration is:
1. machinery and equipment for the record
2. contact the foreign seller shipment
3. goods arrive at Hong Kong terminal
4. declaration of commodity inspection and then declared for tax declaration
5. inspection of machinery and equipment
6. customs declaration and clearing of the goods after pickup
7. logistics delivery to the manufacturer web link .Logistics and delivery to the manufacturer's web link