Plastic injection molding factories, matched to your part
We represent audited injection molding plants. Send your part and we match it to the one plant whose presses and resins fit. You order from the plant. Reply within 24 business hours.
How it works
A manufacturers' representative works for the plants, so you do not pay for the match. What you get is a plant that already runs parts like yours, and a person who stays on the thread until the first samples pass.
Send your part
Upload the STEP file and drawing. Tell us resin, annual volume and whether you need a new mold or want to transfer one. About three minutes.
We pick the lane and the plant
Press tonnage, part size, resin and industry decide the lane. We send the RFQ to the partner plant in that lane and reply within 24 business hours.
The plant quotes and you order
The plant quotes the mold and the piece price, makes T1 samples with a report and takes your purchase order. We follow up until samples are approved.
Is your part ready for an injection molding quote?
A plant quotes faster and closer to the final price when these six things are in place. Tick what you have. Nothing is sent.
Estimate the press size
Clamp force keeps the mold closed against melt pressure. A quick rule: projected area of all cavities times a pressure factor for the resin, plus a margin for the runner. The lane follows from the tonnage.
Rule of thumb only. Thin walls and long flow paths need more force. The plant confirms with its own calculation or a mold flow study.
Lanes in the network
Each partner plant holds one lane in its region. That keeps plants from competing for the same RFQ and lets each one go deep in its kind of work. Ranges are typical. How we audit plants.
| Lane | Clamp force | Part size | Typical resins | Typical work |
|---|---|---|---|---|
| Small precision | 30 to 150 t | Up to about 150 mm | PC, POM, PA, PBT, LCP | Connectors, gears, clips, small medical and electronic parts |
| Mid range | 150 to 450 t | 150 to 400 mm | ABS, PC/ABS, PP, PA66 GF | Housings, enclosures, appliance and tool parts |
| Large parts | 450 to 1,300 t | 400 to 1,000 mm | PP, HDPE, ABS, PC/ABS | Bins, panels, automotive trim, furniture parts |
| Overmolding and insert | 50 to 300 t, 2K or vertical | Up to about 250 mm | TPE over PP, PC or ABS, metal inserts | Soft-touch grips, seals, insert-molded nuts and terminals |
| Clean molding | 50 to 350 t | Up to about 250 mm | Medical grade PP, PC, PE, COC | Device housings, disposables, food contact parts |
Common resins and what they are used for
Shrinkage decides how much bigger the cavity is cut than the part. It is one reason a mold built for one resin rarely runs another. Values are typical ranges from resin datasheets. Your resin supplier's datasheet for the exact grade wins.
| Resin | Typical parts | Typical mold shrinkage |
|---|---|---|
| ABS | Housings, covers, consumer products. Easy to color and texture. | 0.4 to 0.7% |
| PC and PC/ABS | Clear or tough parts, electrical enclosures, light covers. | 0.5 to 0.7% |
| PP | Living hinges, caps, bins, automotive interior. Low cost, chemical resistant. | 1.0 to 2.5% |
| PA6 and PA66, glass filled | Brackets, structural clips, under-hood parts. Must be dried well. | 0.2 to 1.0%, direction dependent |
| POM (acetal) | Gears, bearings, snap fits. Stiff and slippery. | 1.8 to 2.5% |
| PBT | Connectors and electrical parts that see heat. | 1.5 to 2.0% |
| TPE and TPU | Grips, seals, overmolded soft layers. | 0.5 to 2.0%, grade dependent |
| PEEK | High temperature and medical parts. Few plants run it, so expect longer quotes. | 1.0 to 1.3% |
What drives the mold and the piece price
An injection molding quote has two parts: the mold, paid once, and the piece price, paid on every order. The six items on the right decide most of both. Several can be changed on the drawing before you ask for a quote.
- CavitiesA 4-cavity mold costs more than a single cavity but cuts the piece price. Annual volume decides the right number.
- Mold steelP20 for mid volumes, hardened H13 or S136 for long runs and glass filled or clear resins.
- Side actionsUndercuts need slides or lifters. Each one adds cost, lead time and a part of the mold that wears.
- Runner systemA hot runner costs more up front, saves resin and cycle time on high volumes.
- Surface finishMirror polish and texture add days of tool work. Specify finish per face, not for the whole part.
- Cycle time and resinPiece price is mostly press time and material. Thick walls cool slowly and cost more per part.
A sales rep, not a trading company
Three common ways to buy molded parts from a plant you do not know yet. They differ in who you pay and who you talk to.
| Manufacturers' rep (us) | Trading company | Sourcing agent | |
|---|---|---|---|
| Your PO goes to | The plant | The trading company | Usually the plant |
| Who pays the middle | The plant, a commission | You, in the margin | You, a fee or a percentage |
| Engineering questions | Direct with the plant engineers | Through the trader | Through the agent or direct |
| Who answers for quality | The plant, under your PO | The trading company | The plant, agent checks |
| Who holds the mold | The plant, owned by you | Often the trader | The plant, owned by you |
Parts we match by industry
Each industry adds its own paperwork. Mention material certificates, lot traceability, flammability ratings or food contact in your RFQ so the plant quotes the controls with the part.
Consumer products
Housings, covers and accessories where color matching and cosmetic faces decide acceptance.
Electrical and electronics
Enclosures, connectors and terminal blocks in PC, PBT and flame retardant grades.
Automotive aftermarket
Clips, trim, brackets and covers in PP, PA and ABS.
Appliances
Panels, knobs, internal frames and water contact parts.
Medical devices
Device housings and disposables. Ask for clean molding and lot traceability in your RFQ.
Industrial equipment
Covers, handles, guards and glass filled structural parts.
Have a model ready?
Send the short version now and we ask for anything missing. To give resin, volume and mold details up front, use the full RFQ form.
Your files go only to the plant we match. Tick NDA on the full form and nothing is shared until it is signed.
Run an injection molding plant? Let us represent it.
We bring overseas buyers whose parts fit your presses. No signup fee. You pay a commission only on orders from buyers we introduce, and you deal with the buyer directly.
Questions buyers ask
Something else? Email .
Are you a molding factory?
No. We are a manufacturers' representative. We represent a group of injection molding plants that we have audited, and we match each RFQ to the plant whose lane fits the part. You place the purchase order with that plant and it ships to you on its own paperwork.
How are you paid?
Buyers pay us nothing. The partner plant pays us a sales commission on orders from buyers we introduce, for as long as it makes that part for you. We never send you an invoice. Your price is quoted by the plant.
Who owns the mold?
You do, once you have paid for it. Put mold ownership in your purchase order, ask the plant to mark the mold with your part number and agree in writing how the mold is released if you move production. We check that this is in place before the first sample.
Who sees my drawing?
Only the plant we match, 2 at most. We do not post RFQs on a marketplace. If you tick the NDA box, the plant signs your NDA before it receives the files.
Where are the partner plants?
We open the network one region at a time, so we can audit every plant in person. The first region is Binh Duong and Dong Nai in southern Vietnam. Plants usually quote FOB or EXW, and you can use your own forwarder.
What volumes make sense?
Steel production molds pay off from a few thousand parts a year. Below about 500 parts, an aluminum prototype mold or a family mold is often cheaper, and we tell you when that is the better route. Mold transfers of existing tools are welcome.
Guides for molded part buyers
- Choosing a Supplier
How to choose an injection molding factory: 9 checks before you place the mold order
How to choose an injection molding supplier: press range, mold shop, resin handling, QC, sample process and the questions that expose a weak plant early on.
- Cost
Injection mold tooling cost: what drives the price and where you can cut it
Injection mold tooling cost explained: cavities, steel grade, part size, side actions, hot runner and finish. Typical ranges and how to cut cost without risk.