Knowledge
Packaging knowledge base
Practical guides for buyers who source packaging — written from the supplier side of the table, including the parts that make a project slow when they are skipped.
Guides
Paper or plastic? A decision framework for the EU market
How to choose between paper and plastic packaging for the EU: barrier, food contact, weight, recyclability grading and the 2030 market-access deadlines.
Read the guide →The Declaration of Conformity for packaging: who signs, what it says
The PPWR Declaration of Conformity: who draws it up under Article 15, what it contains, and what a Chinese packaging supplier must hand over.
Read the guide →MOQ explained: why custom packaging has a minimum order
Why custom printed packaging has a minimum order quantity, how it is calculated for cartons, pouches and labels, and how to launch with a smaller run.
Read the guide →Planned for the next release
- Food contact compliance: the documents a supplier must provide
- Dieline and artwork guide: preparing print-ready files for packaging
- FOB, CIF or DDP: choosing shipping terms for packaging into Europe
- Mono-material vs multilayer: designing recyclable flexible packaging
- Running a packaging supplier audit from overseas
Why we publish this
Most packaging sourcing problems are information problems: a missing weight table, a barrier assumption, a document that arrives after the vessel sails. Publishing how we work is the cheapest way to show what a buyer should expect from a supplier — including from us.
What this knowledge base covers
These guides answer the questions that decide whether an order runs smoothly: which material suits the product, what the EU packaging rules require from 12 August 2026, what a declaration of conformity and a technical file actually contain, how incoterms and HS classification shape the landed cost, and how minimum order quantities are really calculated.
Every page is written to be checked rather than believed. Dates, regulation numbers and document names are given so your compliance or quality team can verify them against the official source, and the pages are dated at the bottom because EU rules and national rules move.
If a question you need answered is not here, send it with your enquiry — the questions buyers ask most often are the ones that get written up next.
Request a quotation
Send your item, size, quantity, artwork status and destination country — we reply with price, lead time and the compliance documents you need for your market (PPWR, food contact, Declaration of Conformity).
Send your RFQ or email sales@huaxinjiayuan.com