This is the third satellite of the map of industrial clusters, and it answers the question left over once you know where everything is made: how it gets made so fast. The short answer already appeared in the guide on inside Shenzhen, and it is supplier density. The long answer is here, and it runs through three objects: the mould, the sample and the MOQ.
Where the number comes from, and what it leaves out
Forty-five days between approving a drawing and having goods packed in a container is a real deadline, routinely practised and routinely met. It almost always describes the same scenario:
- A variation on something the factory already makes. The finish changes, the colour, a detail of the housing, the packaging and the brand. The main tooling exists or takes a small alteration.
- Catalogue components. Nothing that has to be developed by a second-tier supplier.
- Volume within current capacity. It slots into a production window the factory already had.
- Buyer decisions taken the same day. Sample and artwork approval in hours, not weeks.
Notice that three of the four conditions are about what already exists, and the fourth is about you. That is why the same supplier delivers in 45 days for one customer and 100 for another, with the same product: the difference is rarely at the factory.
What the number leaves out, and where the sum misleads: the 45 days end with the container sealed in China. They do not include ocean transit, customs clearance or your own inland logistics, which together usually add up to as much again. The full path, opened stage by stage, is in the 2027 sourcing plan.
And when the product is genuinely new, with tooling from scratch? Then the deadline moves to another band, because making the tool alone eats weeks, and it is normal for the full cycle to the first container to run past two or three months. That is not slowness: it is one extra stage, which the 45-day version simply does not have.
The mould: the object that decides everything else
In almost any product made of plastic, pressed metal or rubber, there is one object that sets cost, lead time, quality and above all bargaining power: the mould. Understanding the mould is understanding the whole relationship.
The cost, and why no round figure helps
The price of a mould varies with the size of the part, the complexity of the geometry, the number of cavities, the type of steel and the expected working life. A simple mould, in softer steel with a single cavity, made for modest runs, costs a fraction of a multi-cavity mould in hardened steel for continuous production. Any figure quoted without those variables is noise.
What is worth knowing is the amortisation logic. The mould is a fixed cost: it dilutes across quantity. The same tool that makes a product unviable at a thousand units can be irrelevant at twenty thousand. It is that calculation, not the price per piece, that decides whether an own-brand project works, as the guide on own brand, OEM and ODM sets out.
The question that matters more than the price: whose is it
Here is the point that costs the most and that almost never comes up in the opening negotiation. Paying for the mould does not automatically mean owning it, and owning it does not mean being able to take it out of the factory. The three are different things and all of them depend on what is written down.
The arrangements you see in practice:
| Arrangement | How it works | The risk |
|---|---|---|
| Mould paid for by the buyer | You pay for the tooling and it is yours, with a contract covering ownership and custody | Low, provided the document exists and says where the mould is kept |
| Mould amortised into the price | The factory absorbs the cost and recovers it inside the unit price | You do not own it. Change supplier and you start from scratch |
| Mould refunded after volume | You pay, and the amount comes back once an agreed quantity is reached | The target may be unreachable, and then the refund never happens |
| Factory's mould, catalogue product | Nothing is yours, you are buying a product that exists | None, but no exclusivity either |
The line that sums it up: whoever pays for the mould is not always whoever ends up with it. If your product depends on exclusive tooling and you do not have it in writing that the tool is yours and where it is kept, you do not have a supplier, you have a dependency.
The three samples, which are not the same thing
Talking about the sample in the singular is the source of half the misunderstandings in production. They are three distinct objects with distinct functions, and swapping them costs a batch.
01 The first sample, which proves the idea
Made off the production line, by machining, 3D printing or hand assembly. It validates form, size, ergonomics and function. It proves nothing about series production, because it did not come out of the process that will produce it. It is common for it to be better than the final product, and that is where the disappointment starts.
02 The pre-production sample, which proves the process
It comes off the final tooling, on the real machine, with the real material and the real operator. It is the first part that tells the truth about how the batch will come out. Approving production without having seen one of these is the most expensive and most common mistake in product development.
03 The golden sample, which settles the future argument
It is the unit approved and signed by both parties, kept as a reference. It exists to answer a question that always turns up three months later: is this conforming or not? Without it, that argument becomes opinion against opinion, with the goods at the port. With it, the pre-shipment inspection has something to compare against.
The mistake you pay for once and never forget: approving production on the strength of the first sample, because it looked good and the deadline was tight. The first sample answers 'does this product make sense?'. Only the pre-production one answers 'can the factory make this twenty thousand times?'.
The MOQ, and why it is hardly ever what they say
The minimum quantity is usually presented as a factory rule, when it is in fact the sum of the minimums of everyone standing behind it. Once you understand that, the MOQ stops being a fixed obstacle and becomes a set of decisions that are yours.
What makes up the number:
- The minimum raw material batch. Resin, steel, fabric: the factory's own supplier has a minimum too.
- The colour minimum. An exclusive pigment has its own minimum lot, and it is one of the most common causes of a high MOQ on coloured products.
- The packaging print run. A custom printed box is a printing works, not a factory, and has its own minimum, often larger than the product's.
- The setup time. Changing the mould, adjusting the machine and calibrating eats hours of line time that have to pay for themselves in some quantity.
- The exclusive component. Any part the factory does not buy routinely brings its supplier's minimum along with it.
Hence the most useful rule of thumb in the category: the MOQ falls when you accept the standard and rises when you want exclusivity. Accept the colour the factory already uses, plain packaging with an applied label, the component from its own catalogue, and the minimum can halve without the product losing anything your customer would notice.
And the reverse reading holds: when somebody offers a MOQ far below what the category practises, it is usually not a generous factory. It is a trading company that will bundle your order with others, which is nothing wrong in itself, but it changes who answers for quality and how much you can customise. The four figures who do this are described in the guide on inside Shenzhen.
The 45 days, day by day
This is the timeline of the favourable case, the one where tooling exists or barely changes. Use it as a ruler: when somebody promises 45 days, this is the schedule being promised.
| Days | What happens at the factory | What depends on you |
|---|---|---|
| 1 to 5 | Drawing review, material definition and firm quotation | Send the drawing, the reference and the real volume. Vagueness here costs days at the end |
| 5 to 12 | Tooling adjustment, first part and pre-production sample | Approve or reject on an objective criterion, the day the sample arrives |
| 10 to 18 | Packaging and manual artwork in production at the printer | Deliver a closed file, in the right language, with the destination's legal information |
| 15 to 35 | Series production of the batch | Follow it, do not interrupt it. A change here restarts the queue |
| 33 to 38 | Batch inspection against the golden sample | Have the signed sample and the acceptance criterion defined beforehand |
| 38 to 45 | Final packing, palletising, paperwork and loading | Have the shipment booked in advance, especially near a public holiday |
Notice that the right-hand column is almost entirely about your decisions, and that they cluster in the first twelve days. A project that runs late usually ran late there, not at the end.
Why this only happens this way in China
The question deserves an honest answer, because the usual explanation, the cost of labour, stopped being true a long time ago and explains no speed at all.
What explains it is the proximity of everything. In one region, and often in one city, you find the toolmaker, the resin supplier, the moulder, the plater, the screen printer, the packaging printer, the assembler and the test laboratory. Each of those stages, taken alone, lasts the same anywhere in the world. What China removes is the time between them: the freight, the waiting, the distant supplier's queue and the correction round that turns into a journey.
There is a second factor, less often cited and just as decisive: the tolerance for repeating. Redoing a mould, trying another material, producing three variants and picking one is expensive everywhere and cheap there. That changes the nature of development, because it allows more mistakes in less time, and it is why new products appear there first.
What that means for you: the advantage is not the price of the part, it is the speed of iteration. Anyone using China only to buy cheaply takes the smaller part of what it offers. Anyone using it to develop fast takes the larger.
Where the 45 days become 90
Four slippage points, all predictable and all avoidable.
- The slow approval. The sample arrives, you take twelve days to reply, and in that interval the factory allocated the production window to somebody else. The deadline does not restart where it stopped: it restarts at the back of the queue.
- The extra tooling round. The first part is hardly ever perfect, and each correction costs days. A schedule that assumes getting it right first time is born wrong.
- The forgotten packaging. The box is printed by a different supplier, with its own lead time, and it is surprisingly common for it to be ready after the product.
- Certification remembered too late. Discovering after production that the destination requires a test, a marking on the product or a piece of information on the label forces the whole batch to be reworked. That is what the guides on INMETRO requirements and on ANATEL and INMETRO approval exist to anticipate.
Add the Chinese calendar to that. An order that crosses Chinese New Year does not slip a few days, it slips weeks, and the date is public a year in advance.
What has to be written down before paying for the mould
Five points, and all of them fit on one page. None is an aggressive demand: they are questions a good supplier answers straight away, and hesitation on any of them is already information.
01 Whose mould it is, and where it sits
Ownership and custody are different things. Put both in writing, with the physical location of the tooling and the obligation to hand it over if you ask.
02 How many cycles it guarantees, and who maintains it
A mould has a working life, measured in cycles, and needs maintenance. Without that defined, the part starts coming out with flash in the second year and the argument about who pays for the repair starts from scratch.
03 How many corrections are included
Assume there will be adjustments. Agree how many rounds are in the price and what gets charged beyond that, so that correction does not turn into a renegotiation every time.
04 The objective acceptance criterion
Define what makes the pre-production sample approved: dimensions with tolerances, finish, a functional test, whatever applies. Approval by impression is approval that gets argued about later.
05 What happens if the partnership ends
It is the clause nobody wants to write and the only one that matters on the day it is needed. Where the mould goes, in what timeframe, and who bears the transport.
None of this replaces checking who you are dealing with before transferring money, which remains the first step of everything, set out in the guide on how to check a Chinese supplier. An excellent contract with a company that does not exist is paper.
What the contract does not solve
It is worth ending on the limit, because a guide promising to solve product development with a list of five clauses is leaving out the hard part.
No document tells you whether the pre-production sample that arrived by post really came off the final tooling, or was made by hand to please you. No document guarantees that the material used in the batch is the same as in the approved sample, nor that the mould stored under your name is the one mounted on the machine. Those three things are only known by being there on the right day, and that is exactly where an operation with a presence on the ground pays for itself: confirming where the sample came from, following the first hour of production and checking the batch against the signed reference before the container closes.
Frequently asked questions about developing a product in China
Is it true that a new product can be ready in 45 days?
It is true, but the number describes one specific case: a variation on something the factory already makes, with existing tooling or a small tooling change, new packaging and finish adjustments. A genuinely new product, one that needs tooling from scratch, usually takes considerably longer, because making the tool alone eats weeks. Knowing which of the two cases you are in is what separates planning with the deadline from being disappointed by it.
How much does an injection mould cost in China, and who ends up owning it?
The cost varies enormously with part size, complexity, cavity count and the steel chosen, which is why any round figure misleads. The more important question is not what it costs, it is whose it is. Paying for the mould does not automatically make it yours, nor does it mean you can take it out of the factory: that depends on what is written down. Without a contract covering ownership and custody, you are paying for an asset that sits in somebody else's hands.
What is the difference between a sample, a pre-production sample and a golden sample?
They are three distinct things and confusing them costs a batch. The first sample validates form and function, and is usually made off the line, by machining or 3D printing. The pre-production sample comes off the final tooling and the real process, and is the only one that proves how series production will actually come out. The golden sample is the unit approved and signed by both parties, kept as the reference against which the batch is judged at inspection.
Why is the MOQ I am quoted not always the real MOQ?
Because the MOQ is rarely a factory rule: it is the sum of the minimums of everyone standing behind the factory. The minimum raw material batch, the minimum pigment lot, the minimum print run for the packaging, the machine setup time and the component supplier's own minimum. That is why the MOQ tends to fall when you accept the standard colour, plain packaging or the component the factory already buys, and to rise when you want everything exclusive.
Where does the 45-day schedule usually slip?
At four predictable points. At sample approval, when the customer takes a long time to reply and the factory reallocates the line. At mould correction, because the first part is hardly ever perfect and each round of adjustment costs days. At the packaging, which is printed by a different supplier with its own lead time. And at certification, when the test required at destination is only remembered after production has started.
What has to be in writing before paying for the mould?
Five things, and all of them fit on one page. Who owns the mould and where it is kept. How many cycles of life it guarantees and who pays for maintenance. How many correction rounds are included in the price. What happens to the mould if the partnership ends. And the objective acceptance criterion for the pre-production sample, so that approval does not rest on opinion.
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