Milorez applies a documented quality gate before every hydrocarbon resin and PVA fiber shipment: the purchase specification is fixed, the partner factory’s batch evidence is reviewed, relevant properties and packaging are checked, and a COA travels with the order. Independent SGS or Bureau Veritas inspection is available on request.
Quality begins with a defined purchase specification
“Standard grade” is not an adequate acceptance criterion. Before order confirmation, Milorez aligns the quotation, technical data, sample reference where applicable, purchase order, and inspection plan around one written specification.
For an MR-* resin grade, that normally identifies the resin chemistry, softening-point range, color scale and limit, acid-value limit, ash limit, packing, label, and any buyer-specific test requirement. For an MF-* PVA fiber grade, the agreed fiber parameters, packing, identification, and buyer-specific checks are recorded.
If the buyer requires a particular test method or sampling plan, it must be stated before the order. Results obtained under different methods may not be directly comparable.
How partner factories are reviewed
Milorez does not turn the word “audited” into a substitute for evidence. Factory review is product- and risk-specific and focuses on whether the proposed source can repeatedly make, identify, test, pack, and release the agreed grade.
| Review dimension | What Milorez looks for | Procurement risk addressed |
|---|---|---|
| Legal and operational basics | Entity and site information relevant to the proposed supply | Unknown or misrepresented production source |
| Product capability | Experience and equipment relevant to the requested resin chemistry or PVA fiber grade | A technically unsuitable source quoting outside its stable range |
| Incoming-material control | Defined receipt, identification, and handling practices | Uncontrolled input variation |
| Process and lot control | Batch identification, production records, segregation, and change control | Mixed lots or unexplained specification drift |
| Laboratory resources | Relevant test capability, methods, equipment status, and result records | Results that cannot support shipment release |
| Traceability | Linkage among production lot, sample, COA, packing marks, and shipment | Inability to investigate a later issue |
| Quality history | Specification consistency, deviation handling, and corrective-action response | Recurring defects without root-cause action |
| Packing and loading | Bagging, labeling, storage, palletizing, container checks, and loading discipline | Moisture, damage, count, or identification errors |
Review depth may include document checks, remote evidence, or an on-site review as appropriate to the order. It is not presented as a certification and does not replace product-specific inspection.
Pre-shipment QC flow
- Specification lock: The approved grade, limits, packing, markings, documents, and inspection scope are tied to the purchase order.
- Lot identification: The production source identifies the lot or lots allocated to the order.
- Sampling and result review: Relevant batch evidence is reviewed, with spot checks for agreed properties where applicable.
- Packing verification: Bag type, unit weight, labels, lot marks, pallet arrangement, and stretch wrapping are compared with the order.
- Loading control: The container and loading arrangement are checked within the confirmed inspection scope, with exceptions documented for review.
- Release and documents: Conforming results support shipment release, and the batch COA is included in the document set.
Resin inspection items
Typical values: no universal numbers apply across the MR-* range. The typical value and acceptance limit for each item are grade-specific and must be stated on the approved technical specification and batch COA.
| Inspection item | Why it matters | Typical values / acceptance basis |
|---|---|---|
| Softening point | Influences processing window, tackifier behavior, and heat response | Agreed MR-* grade range |
| Color | Helps control finished-product appearance and grade consistency | Agreed scale and limit, such as Gardner or APHA/Hazen where appropriate |
| Acid value | Indicates the grade’s specified acidity and supports batch consistency checks | Agreed maximum or range, reported in the specified unit |
| Ash | Screens for non-organic residue against the grade requirement | Agreed maximum percentage |
| Appearance and grade identity | Checks visible consistency and allocation of the correct material | Approved sample or written description, where specified |
| Bag weight and count | Confirms packing accuracy and container quantity | 25 kg per resin bag and approved packing list |
| Labels and lot marks | Supports receiving control and traceability | Approved label content and allocated lot |
Softening point, color, acid value, and ash are sampled or reviewed as applicable before shipment. The exact scope depends on the product chemistry, grade, order risk, and buyer’s written requirements.
PVA fiber inspection basis
Construction-grade PVA fiber is controlled against the confirmed MF-* specification rather than a generic “PVA fiber” description. The review covers grade identity, the specified fiber parameters, appearance, lot identification, bag and label requirements, packing quantity, and the COA fields agreed for the order.
Application performance still belongs in the buyer’s mix. Dispersion, dosage, mixing sequence, other additives, and curing conditions can change the result even when the delivered fiber conforms. Use a 1-2 kg sample and define the trial’s pass/fail criteria before scaling to an FCL.
COA and traceability
A batch COA accompanies every shipment. It should allow the receiving team to connect:
- the Milorez grade and purchase order;
- the reported production lot;
- the properties agreed for reporting;
- the packing and shipment documents.
Tell us before order confirmation if your incoming-quality system needs a particular COA template, test method, decimal precision, manufacturing date field, or lot-level result breakdown. Additional requirements are confirmed for feasibility rather than assumed.
Independent inspection available on request
SGS or Bureau Veritas can be arranged on request for buyers who require an independent checkpoint. The buyer and Milorez should agree:
- inspection company and nominated office;
- scope and acceptance criteria;
- sampling location and method;
- witness tests or laboratory tests;
- packing, quantity, and container-loading checks;
- report timing, cost allocation, and the action for a nonconforming result.
This wording is deliberate: third-party inspection availability is not an existing certification claim for Milorez or a partner factory.
What happens when evidence does not match
A result outside the agreed limit, a lot mismatch, or a packing deviation is not relabeled as “close enough.” The affected shipment is held for documented review. The next action may be confirmation testing, segregation, rework, replacement, or buyer-approved disposition, depending on the issue and the purchase agreement.
Quality control reduces avoidable shipment risk; it cannot prove performance in every formulation. Buyers should complete laboratory evaluation and, where appropriate, a production trial before relying on a new grade.
Define the QC scope before pricing
Send your specification, required test methods, sampling plan, COA template, packing standard, and any third-party inspection requirement to [email protected]. For packing and document planning, see shipping and packaging. WhatsApp: chat on WhatsApp.
Frequently asked questions
Does every shipment include a COA?
Yes. A certificate of analysis accompanies each shipment and reports the batch results defined for the agreed MR-* or MF-* grade. Buyers should confirm any additional COA fields before the purchase order.
Which hydrocarbon resin properties are checked before shipment?
The standard pre-shipment review includes the agreed grade identity and spot checks or batch-result review for softening point, color, acid value, and ash, as applicable. Acceptance limits are grade-specific and must be fixed in the purchase specification.
How does Milorez assess partner factories?
The review considers legal and operational basics, relevant production capability, incoming-material and lot controls, laboratory resources, traceability, specification history, corrective-action handling, packaging, storage, and loading capability.
Is SGS or Bureau Veritas inspection included automatically?
No. SGS or Bureau Veritas inspection is available on request. Scope, sampling, timing, access, and cost must be agreed before order confirmation. This optional service is not a claim of existing SGS or BV certification.
Can a buyer provide a custom inspection standard?
Yes. Send the required test items, methods, limits, sampling plan, and report format with the inquiry. Milorez will confirm feasibility with the proposed supply source before quoting or accepting the order.
How is packaging checked?
Pre-shipment checks compare bag type, unit weight, labels, lot identification, pallet arrangement, and stretch wrapping against the approved order and packing plan. Container condition and loading observations are also recorded where included in the agreed scope.
Does factory review guarantee performance in my formulation?
No. Factory review and shipment QC reduce supply risk but do not replace buyer-side application testing. Product suitability should be confirmed with a sample and, where needed, a commercial-scale trial in the buyer's own formulation and process.