OEM / ODM · Shunde, Foshan
Gulfstone builds off-grid outdoor water heaters for importers, RV builders and outdoor brands, under their name and to their market. Arrive with a finished drawing and we build it; arrive with a market requirement and we design it with you.
One product, four states
Your requirement, market and volume.
The first buildable shape, engineered.
Your feedback folded back in.
The signed unit the line copies.
The two terms
The words get used interchangeably, which is why quotes come back wrong. Here is what each one means when Gulfstone runs it.
OEM
Original equipment manufacture
You own the product and the design. Gulfstone builds it — to your drawing, your specification and your brand, on our line, under your name.
What that meansThe product is already decided; the job is to make it well, at cost, in volume.
ODM
Original design manufacture
You own the market, not the drawing. Gulfstone adapts a proven platform to your brief — the shape, the features and the brand are developed with you.
What that meansThe product is not yet decided; the job is to develop it, then make it.
Arrive with a finished drawing and you are buying an OEM program. Arrive with a market requirement and a target price and you are buying ODM — the design work is part of what you get back.
The two routes
Both routes end at the same place — your brand on a certified, container-ready unit. What differs is who owns the design and how much development sits in front of the first order.
Whichever route you take, the design work sits with Gulfstone’s own development lab — the same team that will hand the released drawing to the line.
See what the development lab doesWhat we develop from
A brief does not have to be complete. Send what you have and where the gaps are — filling those gaps is the first thing the development work does.
Send what you have
What comes back first
What is buildable as you have described it, what has to move, and the open questions.
Where the product lands on tooling, unit cost and freight — before the design is frozen.
How many revision rounds the shape needs, and what each round is for.
If the brief fits a platform already in production, we say so — that is a shorter route to a launch than a new tool.
The development cycle
Each round runs against the same unit, so the differences are the only thing under review. It ends when the shape is right — round two or round four.
The brief becomes a buildable form — proportions, feature set, the interface and the mounting.
Reviewed with you before anything is cut.A physical unit, built and tested, so the argument moves from the drawing to something in your hands.
Your revision list drives the next round.The changes go back in and the unit is rebuilt. Most programs settle inside one or two of these.
Sign-off, or one more round.How many rounds a product takes is decided by what changes between them, not by a schedule.
IP and exclusivity
It is settled in writing before a file changes hands, and it follows the route you took rather than a default. Nothing designed for one buyer is offered to another.
A mutual NDA sits between us before any technical detail moves — the file does not travel on a promise.
Your drawing stays yours. Gulfstone builds to it and holds no claim on the product, the identity or the tooling built for it.
The design you commissioned and the tooling cut for it are yours — built for your program, not held back as a platform we can resell.
A tool or a design developed for your program is not quoted, shown or built for another buyer, for as long as the agreement says.
Program scope
A program can be one unit or a system. Everything a finished product is made of is sourced, held to the released specification and documented, so the carton that lands is the product you approved — not the unit and a box of loose parts.
Sourcing a wider scope into one program is how a system ships as one load instead of five.
Commercial shape
The opening order on a water heater program is not a fixed number — it follows two decisions: whether new tooling is cut, and how much of the build is new. Read it as a lever, not a threshold.
No new tooling means the first order can start small. A new mould commits real money, so it raises the opening volume and is recovered across the program rather than on the first run.
A program that takes on the enclosure and the presentation carries more of the build than one that starts from a platform and changes the branding. Scope moves the order the same way tooling does.
A commitment does not have to land at once. Tooling programs are usually staged across agreed runs, so the volume arrives with your demand rather than ahead of it.
The decision
Who owns the design. If you do, it is OEM. If we develop it together, it is ODM. Everything else — the order size, the tooling, the lead time — follows from that answer.
Program evidence
From buyers who brought a brief, a drawing or a market — and left with one of their own.
“We arrived with a market and a price, not a drawing. They built the product around both.”
No engineering team of our own, so we described the market, the size and the cost it had to hit. Two revision rounds and the shape was right — what came back was a developed product, not a platform we had to accept as-is.
“The drawing we sent is the drawing they built. No quiet substitutions.”
We specified the housing, the cut-out and the gas setting ourselves. The approved sample was pulled at pre-shipment and checked against the container — three runs in, the defect rate has stayed under 0.5% and the reorder is at 98%.
Before you choose
Which route fits, what you own, and how a program starts when there is nothing drawn yet.
Start a program
Market, annual volume and the certification it must carry — three lines, and we have what we need. Your reply comes from the engineer who would run the line, scoped to your program rather than matched off a shelf.
