Before you place an order with any blower supplier, run them through four checklists — company, technical, commercial, and logistics. If a supplier answers the company and technical sections in specifics and the commercial and logistics sections in writing, you are dealing with a real manufacturer. Vague answers, or a pivot back to price whenever you ask something technical, is the warning sign. Use this as a copy-paste audit for your procurement team.
1. Company checklist
- Legal entity name and registration — does it match the bank beneficiary?
- Years in operation (a long track record survives more than one downturn)
- ISO 9001:2015 certificate — request the PDF; check certifier, number, expiry
- Manufacturer or trader? Ask which models are made in-house
- Factory location and whether they own the plant
- Export experience to your region
A supplier like Yash Blowers answers these cleanly: manufacturing in Faridabad since 1998, ISO 9001:2015 certified, 123 models made in-house. Compare any candidate against that kind of specificity. More on the vetting logic in how to evaluate Indian blower manufacturers.
2. Technical checklist
- Test report format for your exact model (airflow, pressure/vacuum, current, sound, insulation)
- Impeller and housing material (aluminium die-cast is standard for side-channel)
- Bearing and mechanical-seal brand/type
- Motor: kW rating, voltage, phase, and frequency (50/60 Hz) for your market
- Duty rating — continuous vs intermittent
- Compliance marks needed for your region
The frequency question is easy to forget and expensive to get wrong. If you import to a 60 Hz market, confirm the motor is wound or selected for it. See regional voltage and frequency.
3. Commercial checklist
- Default Incoterm and whether they quote FOB Nhava Sheva / Mundra, CIF, or DAP
- Currency and payment terms (advance %, balance trigger, LC option)
- Spare-parts price list — request it before the PO
- Warranty period and what it covers
- Quotation validity and price-escalation clause
Get the Incoterm and warranty in writing. Our Incoterms guide explains the FOB vs CIF trade-off, and warranty and after-sales covers what a good warranty actually says.
4. Logistics checklist
- Export packing spec — ISPM-15 crate/pallet, strapping, desiccant, port caps
- Photographs of packed goods before dispatch
- Document set: Commercial Invoice, Packing List, Certificate of Origin, BL/AWB
- HS code stated on the invoice (8414 family — confirm with your broker)
- Lead time and firm dispatch date at current backlog
- Preferred load port and typical transit to your region
Red flags — walk away or dig deeper
| Red flag | What it usually means |
|---|---|
| No ISO certificate, or a lapsed one | Weak or undocumented quality control |
| Can't produce a model-specific test report | A trader, not the factory |
| Dodges material/brand questions | Cost-cutting on hidden components |
| Only ever talks price | No engineering depth |
| No spare-parts price list | You'll be stranded on a future failure |
| Vague or shifting lead times | Capacity or backlog problems |
Scoring the supplier
Tally the checkboxes. A supplier that clears the company and technical sections and commits the commercial and logistics items to writing is a safe bet. Gaps in company or technical are disqualifying; gaps in commercial or logistics are negotiable but must be closed before the deposit.
| Section | Pass condition |
|---|---|
| Company | Verified entity + live ISO + confirmed manufacturer |
| Technical | Model-specific test report + correct frequency |
| Commercial | Written Incoterm, warranty, and spares price list |
| Logistics | Packing spec + full document set + firm dispatch date |
How to run the checklist in practice
A checklist only works if you use it as a filter, not a box-ticking ritual. A practical sequence:
- First contact (company + technical). On the first call or email, ask the company and technical questions. You are testing whether you are talking to a manufacturer or a trader. Vague technical answers end the conversation here.
- Second round (commercial). For suppliers that pass, request the Incoterm, warranty terms, and spares price list in writing. Get documents, not verbal assurances.
- Pre-order (logistics + verification). Before the deposit, confirm the packing spec, the document set, and a firm dispatch date; for a large order, arrange pre-shipment inspection.
- File everything. Keep the certificate, test-report format, spares list, and warranty with the PO so there is no dispute later.
Verification beyond the checklist
For a container-scale first order, two extra steps are worth the small cost. A pre-shipment inspection by a third-party agency confirms unit count, packing quality, and basic function before the vessel sails — catching problems while they are still the supplier's to fix. And a video walkthrough of the packed goods, or the pre-dispatch photographs, gives you a documented record of condition at origin, which matters if a transit-damage claim arises later. A supplier confident in its work will facilitate both.
Sample questions to paste into your first email
- Are you the manufacturer? Which models do you cast and assemble in-house?
- Please send the test-report format for model ___ .
- What are the impeller/housing material and the bearing and seal brands?
- Motor build for ___ V / ___ phase / ___ Hz — confirmed?
- Your default Incoterm, and can you quote FOB Nhava Sheva / Mundra?
- Warranty period, exclusions, and your spare-parts price list?
- Lead time and firm dispatch date at current backlog?
The quality and specificity of the replies to those seven lines will tell you almost everything you need before a single call.
Verifying the answers, not just collecting them
Answers are only as good as the evidence behind them. For each claim, know what proves it:
| Claim | Evidence that verifies it |
|---|---|
| "We are ISO 9001 certified" | The certificate PDF — check certifier, number, expiry |
| "We are the manufacturer" | Model-specific test report; factory photos/video |
| "We stock spares" | The spares price list, in writing |
| "We can build for your voltage" | Confirmation of the motor winding on the PO |
| "Fast dispatch" | A firm dispatch date at current backlog |
| "Good packing" | Pre-dispatch photographs of the crated goods |
A supplier that answers well but cannot evidence the answers has told you something important. Collect the proof and file it with the PO.
Scaling the checklist to the order
Match your due-diligence effort to what is at stake. For a single unit, the first-email questions plus the certificate and a test report are usually enough. For a container order or a first relationship, add the spares price list, written warranty, packing photos, and — sensibly — a third-party pre-shipment inspection. For an ongoing OEM or distribution program, add a spec-freeze and change-notification clause and, where it helps, a binding tariff ruling on your side. The checklist scales: light for low-risk buys, thorough for high-value or repeat commitments. The one section you never skip, at any order size, is the technical one — because a wrong or untested machine is a problem no commercial term can fix.
Run the checklist against us
Send us this list and we will answer every line — with test-report formats, a spares price list, and a packing spec. WhatsApp +91 9311693322 or email sales@yashblowers.org. Serving importers across the USA, Europe, Middle East, Africa, and Asia.