Trader or broker? The invisible links in the recyclate supply chain

The supply chain for recycled material does not end with the recycler. Traders, brokers, warehouses and logistics intermediaries may be involved between the producer of the recycled material and the packaging manufacturer. Each of these links is important for the traceability of the recycled material, the documentation and the ability to legally verify the recycled content.

It is therefore not enough simply to check whether the material comes from a certified recycler. One must also know who took possession of the material along the way, on what terms, what documents they issued, and whether the continuity of the recyclate supply chain has been maintained. In systems such as ISCC PLUS and RecyClass, the distinction between a trader and a broker has specific implications in this regard for certification and the transfer of declarations.

Who stands between the recycler and the producer?

In previous articles we described how to verify recycled content, how to match a certificate to a market, and what food-contact demands. But between the recycler and the packaging producer there is rarely a straight line. A trader buys regranulate and sells it on. There is a broker who matches the parties to a transaction without ever touching the material. A warehouse, an agent or a logistics intermediary may also stand between the parties.

And the principle is unforgiving: a claim is only as good as the weakest link of the entire recyclate supply chain. The recycler may hold the best certificate on the market, and the converter may keep exemplary documentation. But a single weak link in the middle of the chain can change everything. It may lack a certificate or a transaction document. It may also operate under a different chain of custody model. In such a case, the declaration at the end of the chain loses its substantiation. The PPWR will not ask who was at fault. It will ask the entity that signed the EU declaration of conformity.

Trader vs broker: the difference that decides certification

The difference is legal, not linguistic. A trader acquires ownership of the material. They buy and resell it, and the invoice passes through their books. The material may, but need not, pass through their warehouse. A broker intermediates between seller and buyer and collects a commission. They never become the owner of the material or take physical possession of it. The invoice for the material goes directly from seller to buyer.

This difference determines everything that follows: who must hold a certificate, who issues the transaction documents, and through whose hands traceability passes.

ISCC PLUS: trader with certificate, broker and transport outside the system

The ISCC PLUS rule is simple: every site that takes over certified material, legally or physically, must hold a valid ISCC PLUS certificate, issued per site and valid for 12 months. This applies to traders in both variants:

• Trader with storage (with a warehouse, where the audit also covers warehouse management and batch separation).
• Trader without storage with no warehouse, where the material never physically touches them, but ownership passes through their books, so the balance and the Sustainability Declaration must be maintained).

Every sale of certified material by a trader requires their own Sustainability Declaration. It references the trader’s certificate, the chain of custody model and the percentage attributed to the batch. The SD chain must be continuous: from the recycler, through every trader, to the last entity.

• Broker is the entity that takes over neither ownership nor physical possession of the material, does not need to be certified. But beware: the transaction they broker must still take place between two certified entities, and the SD must flow directly from the certified seller to the certified buyer. 
  

A broker cannot issue an SD, cannot re-invoice certified material, and cannot make any claims about the sustainability of the material. If a broker in practice re-invoices, they cease to be a broker and become a trader without a certificate. At that moment, the chain breaks.

• Transport, i.e. carriers – do not need to be certified. Logistics is outside the system until the carrier takes ownership of the goods.

Since July 2026, the same distinction applies to the declaration under Annex V to Commission Implementing Decision (EU) 2026/1425 (recycled content towards the SUPD target): a trader who does not change the composition of the material passes the supplier’s declaration on (Article 8(3)); a broker can neither issue nor pass it on, not being a party to the transaction.

RecyClass: a trader with an RC certificate and continuity of the material name

Under RecyClass the principle is parallel, but the mechanism differs. According to RecyClass Q&A 2026 (p. 16), all actors receiving certified recycled plastics are eligible for Recycled Plastics Traceability (RC) certification. This includes converters, compounders and traders.

Trader

In practice, a trader who buys certified regranulate and resells it with a recycled content claim must hold their own RC certificate. It is issued per site, valid for 12 months, with an annual verification of the input/output balance.

And here the thread from the first article returns: continuity of the material name. Cross-verification (certificate + material name + invoice) only works if the trade name of the product is consistent throughout the chain. A trader may repack or blend batches from different recyclers. They may also give the material their own trade name. Without an RC certificate covering that new name, traceability is broken. The next link receives an invoice with a name it will not find on any certificate.

There is also good news: RecyClass provides a mechanism for carrying information about add-on modules (A1, A2, D) through trading links. The certification body can add this information to the list of certified products on the trader’s certificate, so that the next actor in the recyclate supply chain sees the full status of the material (Q&A 2026, p. 21). The condition: the trader is in the system, with a valid certificate.

It is worth adding that in RecyClass the trader role does not begin only at the regranulate stage. The Sorting Process (SP) certification also provides a trader option for entities trading sorted waste before recycling, e.g. bales of whole PET bottles. Chain traceability therefore begins even before the recycler. A bale trader who buys sorted bottles from a certified sorting centre and resells them to a recycler is a documented link in the chain. This can be supported by an SP certificate. Alternatively, the recycler can verify a declaration of origin and evidence of no mixing. For food-contact recyclate supply chain this matters in particular, because Module A1 requires documented origin of the waste from the first point of sorting.

Broker

A broker in the RecyClass world looks much the same as in ISCC PLUS. Since they do not receive the material, they are not subject to RC certification, but nor can they be a link through which the claim passes. The invoice and the certificate must connect the certified seller with the buyer directly.

Trader and broker in both systems (comparison)

The weakest link: how one intermediary degrades the entire claim

Now the most important point, and the one most often overlooked. The chain of custody model is not a property of the recycler’s certificate. It is a property of each link individually..

ISCC PLUS

Under ISCC PLUS, every participant chooses their own model: physical segregation, controlled blending or mass balance. The SD accompanying each transaction states which model was applied at that stage.

The consequence: a recycler may operate under controlled blending with the EN 15343 Add-on, confirming physical traceability. But what happens if a trader keeps their balance under the mass balance model at site level? The physical link between the batch and the percentage then ends in their warehouse. From that point down the recyclate supply chain, the claim is already an accounting attribution. The claim inherits the weakest model in the chain, not the strongest.

RecyClass

In RecyClass, for mechanical recycling the problem is solved by design. Controlled blending applies to every link in the scheme, traders included. RecyClass accepts mass balance only for recyclate from chemical recycling.

PPWR

In the PPWR context, this is no academic nuance. Commission Implementing Decision (EU) 2026/1425 of 30 June 2026 confirmed that for mechanical recycling, the methodology relies on physical traceability. If the PPWR delegated acts follow the same path, the entity drawing up the declaration of conformity will need to demonstrate physical continuity through all links. This includes traders. When building a chain, it is worth asking the trader already today: “under which chain of custody model do you keep your balance, and what do you enter on the SD?”.

Food-contact: a trader in the Module A chain

In the food-contact chain, the bar rises. As we described in the third article, for food-contact materials, 100% of inputs must be RecyClass-certified. A trader dealing in recyclate destined for decontamination is a link in that chain. The material passing through their hands must retain its Module A1 status. The Traceability certification module remains A2. The A1 status of the plastic input is listed among the trader’s certified products. It must also be visible in the documents provided to the next link.

An uncertified broker in a food-contact chain is risk squared. Not only do they fail to carry the recycled content claim, they also fail to carry the food-contact status. A buyer may purchase material “through a broker” without a direct documentary relationship with the certified supplier. During an audit, they may discover that these inputs do not count as certified. And in food-contact, that means no certification for the entire output.

The brand owner: the last link looks back at all of them

The brand owner, as we wrote in the first article, need not be certified in either system. In RecyClass there are two pathways: a licence agreement with a certified supplier, or their own RC audit. In ISCC PLUS they are the last entity receiving the SD. But it is precisely the brand owner, or another entity placing the packaging on the market, who most often draws up the EU declaration of conformity. And it is they who answer for what is written in it.

That is why the brand owner’s question is not “does my direct supplier hold a certificate”, but: through how many hands has this material passed, and is each of those hands documented? How many traders? Did any of them change the trade name? Was there a broker somewhere in the middle through whom the invoice passed? Is the chain of custody model consistent from the recycler to the final delivery? The answer to each of these questions is found in the documents: SDs, certificates, invoices, or it is found nowhere. And the PPWR declaration documentation must be retained for years.

Tne conclusion

A trader is a fully-fledged link in the chain provided they are in the system: with a certificate, a balance and transaction documents.

A broker is outside the traceability chain, and must remain outside it.

They match the parties, but the claim, the invoice and the documents flow directly between certified entities. Any departure from this division, re-invoicing, repackaging, renaming, is a broken link.

„A claim is only as good as the weakest link of the entire chain.”

The strongest recycler’s certificate will not repair an undocumented intermediary three links downstream.