Buying guide · Decision finalisation — turning an options list into a confirmed, buildable specification

The Specification Freeze: Turning the Options Catalogue into a Buildable Order

The options catalogue defines what can be chosen; the written specification defines what was chosen. The freeze happens when the returned stage-01 specification — model and construction, lift mechanism, equipment level, colours and livery, branding and artwork — is confirmed line by line, because the quotation, the production run and the pre-shipment inspection all build against that document. A change after the freeze reopens every stage downstream of it, which is why the vehicle list, the destination market and the equipment level are settled before the order is committed.

5 November 2026 · 7 min read · Written for First-time importers and private-label brands

Camper interior finished in the olive wood colour scheme with quilted wall panels and protective film still on the cushions during production

The catalogue defines what can be chosen; the specification defines what was chosen

An options catalogue answers a different question than an order does. The catalogue on this site lists exterior hardware, interior equipment and interior colour schemes — the components that can be fitted into the space of a chosen body, combined freely per order. It is a menu, not a commitment. The document the factory actually builds against is the written specification returned at stage 01 of the process, which names the model and the options that apply. The freeze is the moment that document is confirmed line by line. Everything after it — the quotation, the production run, the pre-shipment inspection — builds against that text, not against the emails and conversations that produced it.

For a first-time importer this is the most useful distinction in the whole ordering process: browsing the catalogue is free and reversible, while the confirmed specification is the point where decisions become commitments. The freeze is not an administrative formality — it is where a programme stops being an intention and starts being an order.

The lines that make up the freeze

The stage-01 specification runs on what you send: the pickup details (make, model, generation, bed or chassis dimensions), the destination market and the equipment list. What comes back — and what a buyer should expect to confirm line by line before treating the specification as frozen — covers the decision set below.

The five specification lines and where each one is decided
Specification lineWhat it fixesWhere it is decided
Model and constructionThe body itself — pop-top, hard-top or canopy, in welded aluminium or FRP sandwich composite, made to the bed or chassis dimensions of the pickupSeries and model pages; fitment is confirmed before anything else
Lift mechanismManual lifting with spring or hydraulic assist as standard on pop-tops; electric scissor lift optional, and recommended on the larger flat-deck and residence bodiesThe roof-lift decision, made at specification time
Equipment levelInterior equipment — fridge, sink and stove unit, bathroom module, dinette, tables, lighting, monitoring — configured per order within the chosen bodyThe interior equipment catalogue
Exterior identityBody colour, graphic livery and window count; the catalogue models define the construction, the exterior identity belongs to the buyerThe OEM exterior-identity options
Branding and artworkLogo and decals applied at the factory, plus packaging, manual and warranty wording in the buyer brandThe private-label programme

Read as a whole, the table is a boundary. Everything in the first lines is fixed by the model chosen, and everything in the identity lines is yours by default. The freeze works because each line has one owner — the model decides construction, the buyer decides identity — so no line is left to drift between the two sides of the negotiation.

What builds against the frozen document

The reason to freeze carefully is that three downstream stages all treat the specification as their input. The quotation is issued against the confirmed specification, the quantity and the destination port — so an ambiguous line in the specification becomes an ambiguous line in the price. Production starts against the approved specification and artwork, with progress records at the agreed checkpoints, so what is being built mid-programme is the document. And the pre-shipment inspection, carried out by your own inspector or a third-party company before loading, checks the units against the same reference.

The freeze also has a memory. For repeat programmes the specification and artwork are kept on file, so a follow-up order is produced to the same standard without re-approval. That only works if the first specification was worth keeping: a document full of unresolved lines produces a follow-up order that inherits them.

Why the late change is the expensive kind

Every stage downstream of the freeze holds the specification as its input, so a change after the freeze does not edit one document — it reopens the chain. A changed equipment line re-prices the quotation. A changed colour or livery reopens artwork that may already be approved in writing for a private-label programme, where artwork is confirmed before production starts. A changed destination market reopens compliance, because the documents that can be supplied for a configuration are confirmed against the market before the order is committed.

None of this means changes are impossible; it means each one is priced and rescheduled against the order rather than absorbed. The discipline that avoids the cost is settling, before the freeze, the three inputs that drive it: the vehicle list, the destination market and the equipment level. Those are buyer decisions, they cost nothing to make early, and every one left open past the freeze converts into rework.

The specification-freeze checklist

  1. Send the pickup details (make, model, generation, bed or chassis dimensions), the destination market and the intended equipment list — these three inputs drive the returned specification.
  2. Read the returned written specification line by line: model and construction, lift mechanism, equipment level, colours and windows, branding and artwork.
  3. Mark every line as chosen, deferred to the options catalogue, or not applicable to the model — an unmarked line is the seed of a late change.
  4. Name the destination market with the specification, so compliance documents are confirmed before the order is committed.
  5. Treat the confirmed specification as the trigger for the quotation — freeze first, then quote against quantity and destination port.
  6. Expect production records and the pre-shipment inspection to reference the document; raise questions at the checkpoints, not after loading.
  7. For repeat programmes, keep the specification and artwork on file so the follow-up order is confirmed rather than re-specified.

Evidence

Where every statement in this guide comes from

This list is part of the article. Anything marked as awaiting a factory document is deliberately absent from the copy above.

Statements used in this guide and their sources
StatementSourceStatus
Stage 01 returns a written specification naming the model and the options that apply, built from the pickup details, destination market and equipment list the buyer sendssrc/content/company.ts — processSteps 01Confirmed
The quotation is issued against the confirmed specification, quantity and destination port; production starts against the approved specification and artwork with progress records at agreed checkpointssrc/content/company.ts — processSteps 02–03Confirmed
Pre-shipment inspection is carried out by the buyer inspector or a third-party company before loadingsrc/content/company.ts — processSteps 04; src/content/faq.ts — quality-check answerConfirmed
Manual spring- or hydraulic-assisted lifting is standard on pop-tops; electric scissor lifting is optional and recommended on the larger flat-deck and residence bodiessrc/content/faq.ts — lift answer; src/content/series.ts — T4/T5 specsConfirmed
Exterior colour, livery and window count are set per order; private-label artwork is approved in writing before production; specification and artwork are kept on file for repeat programmessrc/content/company.ts — oemProgrammes (Exterior identity, Private label, Programme support); src/content/faq.ts — OEM answerConfirmed
Interior equipment is configured per order from the options catalogue within the space of the chosen bodysrc/content/options.ts — interiorEquipment intro; src/content/faq.ts — equipment answerConfirmed
Compliance documents are confirmed against the destination market for each configuration before the order is committedsrc/content/faq.ts — certifications answerConfirmed
Price and lead timeQuoted per order volume and destination — never publishedQuoted per order
Change-order procedures, amendment pricing, specification document templates and approval turnaround timesNot published — the article stays on the documented route; no procedure, template or turnaround figure is claimedAwaiting factory document

Related

Where to go next

Reading a camper quotation: what should be in it before you sign

What the quotation against your frozen specification should contain

Standard inclusions or options: what actually comes with the body

How the catalogue splits into what exists and what is chosen

Ordering against the selling season

Why stage 01 runs on buyer decisions and deserves the calendar space

OEM and ODM programmes

Where the exterior identity, artwork and parts list of the specification are set

Request a quote

Send the vehicle list, destination market and equipment list; the order returns as a written specification

Ask for the datasheet of the models you are weighing up

Send the market, the pickups you intend to serve and the models on your shortlist. TUYU Camper replies with the specification, the options that apply and the documents we can supply for that configuration.