Sourcing Chemicals from China: Six Checks Before the First Order
· HANGRUI HOLDINGS LIMITED
The short answer: you cannot verify a chemical supplier from a website. You can verify six things before the first order — and each one has a question attached that a supplier either answers from their own process or has to go and look up. The second kind of supplier is the risk.
The six checks
| # | Check | The question that tests it | What it protects against |
|---|---|---|---|
| 1 | Business scope vs licence | “Send the hazardous-chemicals operating licence and tell me which of the classes you quote fall inside it.” | Quoting outside what the entity may legally trade |
| 2 | Storage or no storage | “Do you hold the goods, or is the stock at a third party under your instruction?” | Assuming stock that does not exist; surprise lead times |
| 3 | Cylinders, drums and packing | “What is the requalification period, and what are the test dates on the units for this order?” | Receiving cylinders out of test — a compliance problem on both sides |
| 4 | Grade specification | “Which parameters on your specification sheet are contractual, and which are typical values?” | A “spec” that cannot be defended when the COA arrives |
| 5 | Document set consistency | “Show me a redacted example: transport document, packing certificate, packing list net weight, COA, SDS.” | Marks and documents that disagree at the port |
| 6 | Terms and instrument | “Which Incoterm and version, which named place, and who is shipper of record on the dangerous goods declaration?” | Risk, cost and declaration duties landing on the wrong party |
1. Business scope is not the licence
A Chinese trading company’s business licence (营业执照) states the scope of business; for dangerous chemicals the operating authority is a separate hazardous-chemicals operating licence. Read the second one and read its scope: product classes, and whether it permits storage or only trading without storage (无储存经营).
Two practical consequences:
- A company that trades without storage is not hiding anything — it is a normal trading model. What matters is that it says so, and that the goods’ location is always answerable.
- A quote for a class outside the licence is a problem the buyer inherits at the port, not at the desk.
For products that are also pressure equipment, the physical facts of the units matter as much as the licence: cylinder type, water capacity, test date and valve outlet are all inspectable, and they are the fastest way to tell a supplier who handles cylinders from one who forwards them.
2. Storage, stock and the answer to “when can it ship”
Three answers exist, and they are not equivalent:
| What the supplier says | What it means | What to ask next |
|---|---|---|
| “It is in our warehouse” | Goods physically held by the supplier | Which facility, and is it inside the licence’s scope |
| “It is at a third-party facility under our instruction” | Trading without storage; third-party storage | Which facility, and who issues the release order |
| “We can make it available” | Product sourced per order | Sourcing window, and what the dates are in writing |
⇒ The test is not the model, it is the answer. A supplier who answers the same way twice, in writing, has a process.
3. Cylinders: the date is the whole story
For refillable cylinders the requalification date is stamped on the unit, and the period is set by the framework in force on the route — in the US, the 49 CFR 180.209 requalification periods; elsewhere the applicable modal or national rule. The buyer’s practical checks:
- the test date on the units quoted (not on a sample from another batch);
- the water capacity and tare, because net weight is calculated from them;
- the valve outlet, because it is the difference between a cylinder that connects and one that does not.
None of this requires a laboratory — it requires the supplier to know the specific units, and to be able to put the marks and the net weight into a document set that agrees with itself (document consistency across a multi-entity chain).
4. Specification, grade and the words that matter
A specification sheet has two kinds of numbers: contractual parameters (the ones the COA will state and the buyer can reject against) and typical values (informative). Ask which is which. Two habits that reveal the difference:
- Ask for the COA format before the order, not with the shipment.
- Ask what happens if a contractual parameter fails — a supplier with a process answers “it does not ship”; one without answers “we will discuss”.
For chloromethanes the parameters that settle most arguments are purity, water content, acidity and colour; for refrigerants they are composition, moisture and non-condensable gases. The list is short — the point is that both sides agree on it before the money moves.
5. The document set has to agree with itself
Four documents have to tell the same story, and any mismatch surfaces at the port:
| Document | The value it must carry | Where it disagrees most often |
|---|---|---|
| Transport document | UN number, class, packing instruction | Reusing one UN number across different products |
| Packing certificate | stowage and segregation for the actual load | Generic text not matched to the container |
| Packing list | net weight per unit (net = gross − tare) | Volume quoted where mass is required |
| COA + SDS | the grade as shipped | COA for a different grade than the SDS |
⇒ Ask for a redacted example before the first order. It costs the supplier minutes and removes most of the surprises.
6. Terms before price
The commercial frame decides who signs what:
- Incoterm 2020 and named place — where risk, cost and the declaration duty transfer;
- who is shipper of record on the dangerous goods declaration;
- the payment instrument — agreed before the specification is fixed, because the bank checks the same document set as the carrier.
Negotiating price first and terms later is how a landed cost becomes a dispute.
FAQ
How do I check whether a Chinese chemical supplier may legally trade dangerous goods? Ask for the hazardous-chemicals operating licence and read its scope: the product classes and whether it is licensed for trading with storage or without storage (无储存经营). A business licence alone shows the scope of business, not the licence for the goods you are buying.
What does 无储存经营 mean for a buyer? That the trading company is licensed to trade the goods but does not itself keep them in stock — product is sourced and consolidated per order. It is a normal, legal trading model; it also means “is it in your warehouse?” should be answered as “the goods are held at a third-party facility under our instruction”, not as a storage claim.
Which documents should match before a shipment leaves? Four sets: the UN number and class per cylinder group, the packing list net weight (net = gross − tare), the COA for the grade, and the SDS for the product as shipped.
Why does the cylinder test date matter to a buyer? An out-of-test cylinder is a compliance problem on the receiving side as well. The date is stamped on the unit, and the requalification period is set by the framework in force on the route — asking for the test dates of the specific units is what separates traders who handle cylinders from those who pass them through.
Should the first order go through a letter of credit? That is a commercial decision, not a technical one. The rule that matters: agree the payment instrument before the specification is fixed, because the document set the bank checks is the same one the carrier and the consignee check.
What we can provide
When you buy from one of the group’s operating companies, each of the six checks has a documented answer on request: which entity contracts and under which licence scope, where the goods are held, the cylinder data for the specific units, the specification split, a redacted document example, and the Incoterm and declaration responsibilities.
Who contracts and ships: every shipment is contracted, invoiced and shipped by the group operating company named on the quotation and on the documents for that shipment. This page is the group’s technical reference material; it does not itself contract, invoice, or act as shipper of record.
Contact us with: the product, the market, and the volume you intend to place.
Related
- Incoterms 2020 and Dangerous Goods — where risk, cost and the declaration duty actually transfer.
- Document Consistency Across a Multi-Entity Supply Chain — the four names that must match when the contract, the goods and the invoice sit in different entities.
- Importing R410A and R134a into the EU — the licence and quota checks specific to HFC imports.
Sources
- 49 CFR 180.209 / 180.213 — requalification periods and marking for DOT specification cylinders (eCFR): https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-180
- IMDG Code — classification, packing, marking and transport document requirements for dangerous goods (International Maritime Organization): https://www.imo.org/en/publications/pages/imdg%20code.aspx
- ADR chapter 6.5 — construction and testing requirements for IBCs (UNECE, PDF): https://www.unece.org/fileadmin/DAM/trans/danger/publi/adr/adr2005/English/Part6_ch6-5.pdf
- Incoterms® 2020 — eleven rules, two classes, and the FCA on-board bill of lading option (International Chamber of Commerce): https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/
- CGA P-1 / NFPA 55 — compressed gas cylinder handling and storage practice (Compressed Gas Association / NFPA): https://www.cganet.com/
- Dichloromethane — CAS 75-09-2, density 1.322 kg/L (PubChem CID 6344): https://pubchem.ncbi.nlm.nih.gov/compound/6344
Prepared by Hangrui Holdings Limited (Hong Kong) — the group holding company. Shipments are contracted, invoiced and shipped by the group’s operating companies: HARMONY TECHNOLOGY (ZHEJIANG) CO., LTD. (trading), QUZHOU HUAFU NEW REFRIGERATION MATERIAL CO., LTD. (storage and cylinder filling), and RIBOLUO CHEMICALS (ZHEJIANG) CO., LTD. (distribution). This page is group reference material — the holding company does not contract, invoice or ship. The checks above reference public regulation and industry practice; the licensing position of any specific shipment remains a matter for the parties and their advisers.
Need current specs, quota status, or a mixed-load quote for Six Checks Before the First Order? Contact tom@hangr.hk with your spec & destination port.