A supplier may quote one product grade, accept the deposit, and later say the original material is unavailable or that a different grade will be close enough. This can happen with textiles, plastics, hardware, packaging, electronics, and many small consumer products.
The buyer should not treat a grade change as a small factory adjustment. If the bulk product no longer matches the approved sample or purchase order, the buyer needs written approval, revised pricing, and a clear remedy.
Compare the new grade to the approved sample
Ask for a side-by-side comparison of material, weight, finish, size, color, function, durability, packaging, and certificates. If the supplier cannot explain the exact difference, do not approve production continuation.
For material disputes, read our internal guide on bulk material changed after sample approval. DDPexpert’s China product sourcing support guide explains how specifications should be locked before production.
Questions before accepting a change
- Why is the original grade unavailable?
- Does the new grade affect function, appearance, safety, or compliance?
- Will price, delivery date, or warranty terms change?
- Can inspection verify the new grade before balance payment?
- What refund option exists if the buyer rejects the change?
Keep the order record clean
Any approved change should be added to the PI, platform order, or written purchase record. A private chat note is weaker than a revised order document.
If the supplier moves the promise to WhatsApp or another private channel, compare with the WhatsApp evidence risk guide. For supplier follow-up help, DDPexpert’s China sourcing agent resource is a practical deep page.
Final recommendation
Do not approve a product-grade change casually. Compare it to the sample, update the written order, and keep balance payment tied to inspection evidence.
