Inside HONGYI's Factory
Before you send a drawing to a new supplier, you should know where your part will be made and who answers for it. We make stamped, machined and molded parts, and the work around them, in our own factory in Humen, Dongguan.
- Metal stamping, CNC machining and injection molding in our own production areas
- Dies, molds, finishing and assembly done in-house, not passed to another workshop
- 15+ years making custom metal and plastic parts to customer drawings
- 15+ years
- In-house production
- ISO 9001
- 80+ countries
What to check before you choose a supplier
Jump to the site, the production areas, who does what, inspection or a site review.
Factory at a Glance
Location, experience and contact
Core Production Areas
Stamping, CNC and molding
Who Does What
Tooling, finishing, inspection, packing
Inspection
How finished parts are checked
Site Review
What to verify, what to send
Factory FAQ
Location, operations, confidentiality
Request a Quote
Send your drawings to Parker
Know which site and team handle your order
Our factory is in Humen, Dongguan, in Guangdong province. All production runs there, from tooling and primary manufacturing to finishing and assembly.
When we review your drawing, we tell you the route your part takes through the factory. Parker stays your contact from the first drawing to shipment.
- 2/F, No.12, Dapu Rd., Huaide, Humen Town, Dongguan, Guangdong 523926, China
- 15+ years making custom parts to drawing
- ISO 9001
- Buyers in 80+ countries
- Mon to Sat, 9:00 to 18:00 (GMT+8)
- Parker, parkerzhang@hongyimfg.com
Want the company background first? Read about HONGYI.
Need company details for your supplier approval form?
See the three core manufacturing areas
Most parts we make start in one of three areas. Each one links to a service page where you can check fit, materials and what to send.
Metal stamping
Presses and dies for formed sheet parts in repeat batches. We build the dies for the parts we stamp, so tooling and production stay with one team.
CNC machining
Milling and turning for metal and plastic parts, from prototypes to production runs, reviewed against your datums, tolerances and finish.
Injection molding
Molding machines and in-house molds for plastic parts, from moldability review and first samples to approved production.
Go deeper on each process: metal stamping, CNC machining and plastic injection molding.
Send the drawing, we suggest the route
Many parts combine processes: a stamped bracket with a machined boss, or a molded cover with a metal insert. Parker reviews the drawing and tells you which areas your part passes through. Next: the operations around the core three.
Understand who performs each operation
A custom part can pass through tooling, primary production, finishing, inspection and packing. All of it runs in our own factory, and your quote lists the steps for your part.
| Project step | What we do in-house | What to confirm for your part |
|---|---|---|
| Tooling | Stamping dies and injection molds, designed and made in-house | Tool ownership, maintenance and change terms, stated in your quote |
| Primary manufacturing | Stamping, CNC machining, injection molding, casting, sheet metal fabrication and 3D printing | Route, material and the drawing revision that controls the order |
| Secondary operations | Surface finishing, heat treatment, welding and assembly | Finish specification, masking, and whether dimensions apply before or after treatment |
| Inspection | First article inspection, then a check before shipment | Critical features, method, frequency and the records you need |
| Packing and dispatch | Packing, labeling and shipment documents | Protection, labels, quantity per carton and required documents |
What we do in-house Stamping dies and injection molds, designed and made in-house
What to confirm for your part Tool ownership, maintenance and change terms, stated in your quote
What we do in-house Stamping, CNC machining, injection molding, casting, sheet metal fabrication and 3D printing
What to confirm for your part Route, material and the drawing revision that controls the order
What we do in-house Surface finishing, heat treatment, welding and assembly
What to confirm for your part Finish specification, masking, and whether dimensions apply before or after treatment
What we do in-house First article inspection, then a check before shipment
What to confirm for your part Critical features, method, frequency and the records you need
What we do in-house Packing, labeling and shipment documents
What to confirm for your part Protection, labels, quantity per carton and required documents
Each operation has its own page: metal casting, sheet metal fabrication, 3D printing, surface finishing, metal welding and assembly.
Send the drawing and we map each step.
See how the finished part is checked
An inspection bench matters when the method and the record are tied to your part's requirements, not when it is just a photo of a gauge.
Samples go through first article inspection against your drawing, production starts after you sign off, and parts are checked again before they ship. We work under an ISO 9001 quality system.
For your order, name the dimensions, material documents, appearance criteria or sample approval you need. The method and the report scope are agreed with the manufacturing route.
What to specify at each stage is set out under quality assurance and inspection.
Have your own inspection points or report format?
One factory, one contact, quote to shipment
Parker handles your drawings, samples and orders, so you are not coordinating several suppliers across time zones. If your approval process needs more than a quote, the next section covers what you can ask to verify.
Review the site for your project
If your supplier approval calls for a site review, tell us what you need to verify. We discuss the evidence that fits your project, including whether a live or recorded review is possible.
What buyers usually ask to see
- The route your part takes through the factory
- The equipment that will make your part
- Sample inspection results against your drawing
- How your parts are packed
What to send with the request
- Your drawing, and the 3D model if available
- Material, quantity and finish
- The checks your approval process requires
- Whether you need a visit, a video call or documents
Factory verification FAQ
Short answers to what buyers ask before they approve a new supplier.
Where is HONGYI located?
Our factory is in Humen Town, Dongguan, Guangdong, China. The full address is in the factory section above and on our contact page.
Are all operations done in-house?
Yes. Stamping, CNC machining, injection molding, tooling, finishing and assembly all run in our own factory. Your quote lists the route for your part.
How long has HONGYI been making custom parts?
More than 15 years, making metal and plastic parts to customer drawings for buyers in over 80 countries.
Can I review the equipment for my part?
Send your drawing, material, size and quantity. Parker tells you the planned route and the equipment information that matters for it.
Can I request inspection records before placing an order?
Tell us which report or example your supplier qualification needs. Availability and confidentiality are confirmed for your project.
Are my drawings kept confidential?
Yes. Your drawings and files stay confidential. If you need an NDA, tell us before you send them.
Start with a drawing, not a machine list
A part-specific answer tells you more than a general equipment claim.
Parker
Your Custom Parts Contact, HONGYI
I'm Parker. Send your 2D drawing, and the 3D model if you have one, with material, quantity, finish and the documents you need.
Ask me where each step happens and how the finished part is accepted. I reply within 24 hours for complete drawings.
- In-house production
- Reply within 24 hours
- Drawings kept confidential