Buyer's Guide · 2026 Edition

Factory Audit Checklist: What Drinkware Buyers Should Actually Check

If you are searching "what does a factory audit check", you are usually one decision away from a real order. This checklist splits an audit into the two parts that matter — capability and social compliance — with a documents list, the red flags, and an audit-rights clause for your contract.

By STWADD Sourcing & Quality Desk Updated 02 Nov 2026 10-min read

STWADD showroom in Yongkang displaying stock and custom drinkware — STWADD's Yongkang showroom — where visiting buyers review stock and custom drinkware before an audit or an order.

In this guide

Two audits, not one
Capability audit: the production reality
Social compliance audit: the people side
Documents to request before you fly
Red flags that disqualify a supplier
The audit-rights clause for your contract
Talk to STWADD about your audit

An audit is not a box to tick on a supplier scorecard. It is the difference between a factory that can hit your specification and one that can only show you a catalogue. The mistake most first-time importers make is treating "factory audit" as a single event — when in practice there are two very different checks, and confusing them is how a buyer ends up with a trading office that rents a floor for the day you visit.

01 Two Audits, Not One

Before you schedule anything, separate the two questions an audit answers:

Capability audit — can this supplier actually make your product, to your spec, at your volume, batch after batch? This is about machines, process control and QC.
Social compliance audit — is the workplace run in a way you can defend to your own customers, your retailer, and your conscience? This is about labour, safety and environment.

A supplier can pass one and fail the other. A shiny, compliant office with no real production line is a capability fail. A skilled workshop with no documented labour standards is a compliance gap. Score them separately.

02 Capability Audit: The Production Reality

This is the part that decides whether your bottles leak, hold temperature, and arrive on time. Walk the line and check each item below — "good" is what you want to see, "red flag" is what sends you home.

Area	What to check	What good looks like	Red flag
Equipment	Welding, vacuum, spray, injection, printing	Owned and running, matched to your product type	Only a sales office; line is "next door" or subcontracted without disclosure
QC system	Incoming material, in-process, final AQL	Recorded checks at three stages, with the AQL plan on file	"We check by eye" with no log, no plan
Capacity	Real monthly output vs your order	Headroom so your order does not block the line	Quotes a lead time it cannot name a reason for
Sample-to-bulk	Approved sample vs first bulk	Matched finish, weight, vacuum performance	Bulk visibly differs from the signed sample
Traceability	Material and lot records	Batch numbers link material to finished cartons	No record of which steel or coating was used

Line inspection of stainless steel bottles at an audited partner line — Line inspection is the part of a capability audit you cannot fake from a brochure — it shows whether the QC stage actually runs before cartons are sealed.

03 Social Compliance Audit: The People Side

This is what your own retailer or distributor will ask about, and what protects you if a journalist or a competitor ever asks where your goods come from. The recognised frameworks here are third-party audits — SGS, TUV, BV, Intertek, and BSCI on request.

Area	What to check	Evidence to ask for
Working hours & wages	Legal limits, paid overtime	Payroll vs attendance records
Age verification	No underage labour	ID checks on file for every worker
Health & safety	Guarding, PPE, fire exits	Safety training log, inspection record
Environment & permits	Waste, coatings, discharges	Valid operating and environmental permits
Certifications	Management & social systems	ISO 9001, and a third-party social audit report (SGS / TUV / BV / Intertek / BSCI on request)

Be precise about certifications. A supplier that says "we are BSCI-certified" should be able to show the current report. If they cannot, what you have is a claim, not a certificate. For your own order you can require a fresh third-party audit and name the standard in the contract.

04 Documents to Request Before You Fly

A site visit is expensive; don't waste it discovering what a PDF could have told you. Request these first and read them before booking a flight:

Business licence — confirms a real, registered entity and its scope.
ISO 9001 — a baseline quality-management system (management, not a product certificate).
Material and food-contact certificates — SGS / LFGB for the steel, coating and any plastic in contact with liquid.
Export records — bills of lading or customer references that prove they actually ship the product type you want.
Any audit report — capability or social, current and named.

Packing line preparing drinkware cartons for container loading — The packing line is where capability and capacity meet reality — it shows whether the supplier actually fulfils export orders, not just samples.

05 Red Flags That Disqualify a Supplier

You do not need a 40-page report to walk away. Any of these, on their own, is enough to keep looking:

Stop and reconsider if you see: no fixed production address; refuses to show a working line; only ever meets you in a trading office; no QC records at all; cannot explain how vacuum insulation is achieved; subcontracts the whole order without telling you; or answers certification questions with "don't worry about it".

06 The Audit-Rights Clause for Your Contract

Copy this and fill the brackets. The point is to make the audit a committed condition, not a favour:

Contract clause

Audit rights: The buyer has the right to conduct or commission a capability and/or social compliance audit of the production premises before and during the production of [order reference]. The supplier shall provide access to the actual production line, QC records, and relevant certifications (including ISO 9001 and, where required, a third-party social audit such as SGS, TUV, BV, Intertek or BSCI). If the audit reveals a critical capability or compliance failure, the buyer may withhold payment, require corrective action, or cancel the order without penalty. The cost of a buyer-commissioned third-party audit is borne by [the party named].

07 Talk to STWADD About Your Audit

Request an audit-ready supplier brief Free sample

Tell us your product, volume and target market and we will return, in writing:

the capability and compliance posture of the partner line we would qualify for your order;
which certificates we already hold (ISO 9001, SGS / LFGB food-contact) and which third-party social audit we can arrange for you;
the inspection plan — including the AQL level and the defect classification we apply on every batch.

Sample policy: we send a sample free of charge — you pay only the freight, no deposit. The audit-rights clause above is offered as standard in the framework we propose.

WhatsApp +86 150 8822 8843 · Email bob@stwadd.com

We are a factory-backed supply company in Yongkang, Zhejiang: production runs to your specification at audited partner factories we qualify and work with directly, and every batch passes the inspection plan before the container is sealed. Our OEM and ODM page covers sampling, lead times and inspection, and the 2026 catalogue lists every in-stock model if a stock mould with your finish is the faster route.

Frequently Asked Questions

What is the difference between a capability audit and a social compliance audit?

A capability audit checks whether the supplier can actually make your product to spec, at your volume, consistently — equipment, QC system, capacity and sample-to-bulk consistency. A social compliance audit checks the people side: working hours and wages, age verification, health and safety, environmental permits, and certifications. They answer two different questions: 'can they make it?' and 'should you be sourcing from them?'

Can I require a third-party social audit such as BSCI or SGS?

Yes. For your order you can require a recognised third-party social compliance audit — SGS, TUV, BV, Intertek, or BSCI on request — and ask the supplier to share the report. Put the requirement and the acceptable standard in the contract before production starts, so it is a committed condition, not a polite request.

Do I need to visit the factory in person, or can the supplier's own documents suffice?

For a first order, request the documents first (business licence, ISO 9001, material and food-contact certificates, export records, any audit report) and read them before you travel. A site visit still matters for the capability audit because photos can hide a line that is subcontracted or shared — but documents save you from flying to a trading office that shows you someone else's floor.

How often should a supplier be re-audited?

A capability audit is worth repeating when something changes — a new product line, a move, or a switch to a different production line. A social compliance audit is typically refreshed every one to two years, or sooner if you receive a specific concern. Build the re-audit interval into the framework agreement rather than relying on memory.

How does STWADD handle factory audits for my order?

We are a factory-backed supply company in Yongkang, Zhejiang. We qualify and audit our partner factories to our specification, and for your order we can arrange a third-party social compliance audit (SGS, TUV, BV, Intertek, or BSCI on request) and share the report. We do not present ourselves as a certified factory; we stand behind the partner lines we qualify and the QC we run on every batch.