How to Vet a Sportswear Supplier: Verification, Audit and Capacity

A good sample proves a supplier can make one good garment. It does not prove the company is real, that it owns the factory, or that it can make 3,000 pieces by your deadline. This guide gives a practical verification process for B2B sportswear sourcing: desk checks, factory audit points, capacity questions and the communication habits that predict whether an order will go smoothly.

Step 1: Desk verification

Before you spend time on samples:

Business registration: ask for the company's registration certificate and check the legal name, registration number, address and business scope against the official registry in that country (for example, China's National Enterprise Credit Information Publicity System).
Bank account name: the beneficiary on the proforma invoice should match the registered company name. A mismatch, or a personal account, is a warning sign.
Manufacturer or trading company: both can be good partners, but you should know which you are dealing with. Ask directly and compare with the registered business scope.
Online footprint: website age, consistent addresses and phone numbers, real factory photos rather than stock images, and references from comparable buyers.
Certificates: if a supplier claims social or quality certifications (such as BSCI/amfori, SEDEX/SMETA, WRAP or ISO 9001) or fabric certifications (OEKO-TEX, GRS), ask for the certificate number and verify it on the issuing body's database. Certificates belong to a specific site and have expiry dates.

Step 2: Factory audit points

Visit in person, use a video walkthrough, or hire a third-party auditor. Look at:

Production areas

Cutting room: manual or automated cutting, marker planning, fabric storage off the floor
Printing: sublimation printers and heat presses, screen printing tables, embroidery machines — in-house or outsourced
Sewing lines: number of lines and machines, types (overlock, flatlock, coverstitch), line organisation
Finishing and packing: trimming, pressing, metal detection if required by your market

Quality systems

Incoming fabric inspection and shade checks
Inline QC during sewing, not only final checks
Measurement and AQL procedures, with records you can see
Approved sample kept on the line as the reference

Working conditions

Fire exits accessible and marked, safe electrical installations, reasonable working hours and no signs of child labour. Social compliance matters for brand reputation and, for many retailers, is a condition of doing business.

Subcontracting

Ask which processes are subcontracted (often printing, embroidery or fabric dyeing) and to whom. Unauthorised subcontracting is a common source of quality problems.

Step 3: Capacity questions

Ask specific questions and expect specific answers:

How many pieces per day can the lines handle for a garment like mine?
How much capacity is already booked in my production window?
What is the realistic lead time for my quantity after sample approval?
Which fabrics and trims are stocked, and which must be ordered or dyed?
What happens to my schedule if your fabric mill is late?
Who is my single point of contact, and who covers when they are away?
Can you split shipments if part of the order is needed earlier?

Compare the answers with what you see on the floor. A small workshop claiming very large daily output is a reason to ask more questions.

Step 4: Communication standards

Good communication is the best early indicator of a smooth order.

What to look for

Questions back about your requirements, not just "yes, no problem"
Written confirmation of details, with drawings or annotated mockups
Proactive updates at milestones, including bad news
Consistent answers between sales and production staff

Response times

There is no universal benchmark, but for an active order many buyers expect an acknowledgement within one business day in the supplier's time zone, with detailed answers following once information is checked. Agree expectations at the start rather than judging silence later.

Working across time zones

Sourcing between Europe or the Americas and Asia means little overlap in office hours. To keep orders moving:

Send consolidated, numbered questions at the end of your day so answers are waiting next morning
Agree one shared overlap window each week for a call during critical stages
Use shared documents for specs and the size list, with version numbers
Confirm decisions in writing after every call
Plan around public holidays at both ends — Chinese New Year, for example, can stop many factories for several weeks including the ramp-up afterwards

Step 5: Start small

For a new supplier, start with a sample order and then a modest first bulk order with inspection before balance payment. Scale up after delivery, quality and communication meet your standards.

Supplier verification checklist

☐ Business registration checked on official registry
☐ Bank beneficiary matches registered company name
☐ Manufacturer vs trading company confirmed
☐ Certificates verified on issuing body databases
☐ Factory visit, video audit or third-party audit done
☐ In-house vs subcontracted processes listed
☐ Capacity and booked load discussed for your window
☐ Single point of contact named
☐ Communication and update expectations agreed
☐ Holiday shutdowns factored into the schedule
☐ First order sized to limit risk

Keeping a supplier scorecard

After each order, record a simple score for the supplier: on-time delivery against the confirmed date, inspection result, number of defects claimed after arrival, accuracy of documents, and how quickly problems were answered. Over two or three orders, the scorecard shows whether a supplier is improving, and gives you facts to use in price or payment-term discussions. It also makes it easier to compare a new supplier fairly against the one you already use.

FAQ

Is a trading company worse than a factory?

Not necessarily. A good trading company can manage several specialist factories and handle communication well. The key is transparency about where goods are made and who controls quality.

How do I verify a factory I cannot visit?

Use a live video walkthrough where you choose what to see, ask for recent inspection reports, and consider a third-party audit or a pre-shipment inspection on the first order.

What are the biggest red flags?

Bank details in a different company or personal name, pressure to pay quickly, refusal to share any verifiable registration, prices far below the market, and certificates that cannot be verified.