Most processors source each grade from a single supplier, until a force majeure, an allocation, or a price spike leaves them scrambling. The 2021–22 resin shortages were a hard lesson: the cost of a stopped line dwarfs any savings from single-sourcing.
The risk of single-sourcing
When one producer controls your supply, you're exposed to their outages, their allocations, their price moves and their lead times. A hurricane on the Gulf Coast, a cracker turnaround, or a logistics snarl becomes your production problem, with no fallback.
What a second source actually buys you
- Continuity: if your primary slips, you keep running.
- Leverage: a qualified alternative keeps pricing honest.
- Flexibility: you can shift volume to whoever has availability and the better number.
The objection, and the answer
The usual pushback is qualification effort: validating a new grade takes time. That's real, which is exactly why you do it before you're in a crisis, on a normal timeline, with sample material and a small trial order. Done ahead of time, adding a backup is manageable insurance. Done reactively, it's a fire drill.
How to add one without disruption
Pick your highest-risk, highest-volume grades first. Get a sample of an equivalent with its COA, run it, and place a small qualifying order so the relationship is live. You don't have to switch suppliers, just have a vetted alternative ready. One thing to plan for: the same grade from a second seller is normally not a material change, but an equivalent from another producer is, even when the properties match, so it may need customer notification or requalification.
That is how we suggest starting with us: not "switch to us," but "make us your qualified backup." Same grade, COA with every lot, ready when you need it.