Sourcing Chinese Factory for Custom Packaging

I am in need of a reliable and experienced hardware supplier, specifically for packaging materials, from China.

Requirements:
- I'm looking for a supplier who can provide custom sizes of packaging materials.
- The packaging should include my brand logo.

Ideal Freelancer:
- Proven experience in sourcing Chinese hardware suppliers.
- Specializes in sourcing custom packaging materials from China.
- Capable of ensuring quality control and reliable delivery.

Please propose your experience in this area, along with your strategy for sourcing and handling custom packaging materials. Thank you.