By BPD I meant documentation for your current project, apologies for causing confusion.
Packing materials are a broad term - check from their website the product range. Maybe this could give you some ideas on what they could have as processes.
For example it would be one thing to produce and sell Euro pallet plates and completely different rules to follow if you produce foils/ plastic bags/ PET bottles/cartons/cans etc.
Also check where they have offices, distribution centers and plants - web search could give some results if it is not a really new company. This can give you ideas on org structure, haulage, export etc.