What drives PET resin prices?
PET is priced off a petrochemical chain, regional capacity and the cost of getting it to your port. Understanding how those pieces fit helps you negotiate and time purchases with less guesswork.
Bottle-grade PET resin is one of the most traded polymers in the world, and its price rarely moves for a single reason. Buyers who understand the chain behind it can read the market earlier, compare offers on the right basis and avoid surprises between contract and delivery.
What is PET resin made from?
PET is made by reacting purified terephthalic acid (PTA) with monoethylene glycol (MEG). By stoichiometry, each tonne of PET consumes roughly 0.86 t of PTA and 0.33 t of MEG. PTA is made from paraxylene (PX), an aromatic produced in refineries and aromatics complexes; MEG is made mostly from ethylene (from naphtha or ethane crackers) and, in China, also from coal.
Because feedstocks are the largest part of production cost, PET prices tend to follow PX, PTA and MEG with a lag of a few weeks. Crude oil and naphtha influence PX; cracker margins, ethane and coal economics influence MEG. A move in feedstocks is usually the first sign of where resin offers will go next.
How do capacity and plant outages move prices?
Asia — and China in particular — has added large PET capacity over the past decade, much of it integrated back into PX and PTA. When new lines start up faster than demand grows, producers compete harder and export more; when large plants stop for maintenance or cut rates, offers tighten quickly.
Integrated producers can also choose where to take their margin along the chain, which is why PET spreads over raw materials can widen or narrow even when oil is stable.
Is there seasonality in PET demand?
Bottle-grade demand follows beverage consumption. In the northern hemisphere, converters usually build stock in spring ahead of summer, which tends to support demand in the first half of the year. Fiber-grade PET follows the textile cycle instead, and sheet grades follow food packaging demand.
How do freight, trade measures and currency change the picture?
An importer does not pay the FOB price — it pays the landed cost. Container freight can move sharply with vessel capacity, routings and disruptions, and it can change which origin is competitive from one month to the next. See our guide to landed cost.
Several markets apply anti-dumping or countervailing duties to PET from specific origins. These measures can make an apparently cheap offer uncompetitive once duties are added, so they need to be checked for each origin and destination before contracting. Currency matters too: resin is usually traded in US dollars, so a weaker local currency raises the cost for the buyer even when the dollar price is unchanged.
What should buyers do with this?
- Watch PX, PTA and MEG trends as an early indicator of resin direction.
- Compare offers on a landed-cost basis, not on FOB price alone.
- Check trade-defense measures for each origin before contracting.
- Agree the price basis, validity, tolerance and delivery window in writing.
- Consider rPET pellets where the application and regulation allow it — and read our recycled vs. virgin guide.
General information only — not legal, tax or investment advice. Market conditions and regulations change; confirm the details for your case.
