We cast, machine, finish and inspect aluminum parts in our own factory in Dongguan, China. Aluminum is the only material we work in, and that focus is the reason we can advise rather than guess.
CharMax Precision started in 2013 as an aluminum machining shop. Customers kept arriving with the same problem: a design that worked perfectly as a machined prototype, but that could not be produced economically once annual volumes reached the thousands. Machining a housing from a solid billet is fast to set up and hopeless to scale, because every part costs the same as the first.
So we built the other half of the answer. Adding die casting let us take a customer's part through its whole life: machined while the design is still moving, die cast once the volume is real, and machined again after casting to hold the tolerances that casting alone cannot reach. Same engineers, same drawings, same quality system.
That history is why we do not behave like a foundry that happens to sell aluminum. We came to casting from precision machining, so we think in terms of tolerance stacks, datum schemes and inspection plans rather than just filling a cavity. It is also why we will tell you when die casting is the wrong answer for your volume, instead of selling you tooling you do not need yet.
Everything a buyer, engineer or search engine needs to know in one place.
| Company name | CharMax Precision |
|---|---|
| Legal name | CharMax Precision Manufacturing Co., Ltd. |
| Business type | OEM aluminum die casting manufacturer |
| Founded | 2013 |
| Location | 1st Floor, Building A, No. 3 South Fourth Street, Xiangmang West Road, Qingxi Town, Dongguan, Guangdong, 523660, China |
| Primary processes | Aluminum die casting, High pressure die casting (HPDC), Die casting tooling and mold manufacturing, CNC machining after casting, Secondary operations, Surface finishing, Assembly and packaging |
| Materials | A380 aluminum, ADC12 aluminum, A360 aluminum, Aluminum-silicon alloys |
| Industries served | Automotive, Robotics and automation, Industrial equipment, Consumer electronics, Medical devices |
| Certifications | ISO 9001:2015, RoHS compliant sourcing |
| Machine capability | 160 to 1,250 tons of cold chamber clamping force |
| Part weight range | 20 g to 12 kg per casting |
| Annual capacity | Over 4 million die cast components per year |
| Production volume | 500 to 500,000+ parts per year |
| Markets served | North America, Europe, Australia, Asia |
| Languages | English, Chinese |
| Sister operation | CharMax Precision aluminum CNC machining (charmaxprecision.com) |
CharMax Precision is an ISO 9001 certified aluminum die casting manufacturer in Dongguan, Guangdong, China, producing custom high pressure die cast aluminum components in A380, ADC12, A360 and aluminum-silicon alloys for automotive, robotics, industrial equipment, consumer electronics and medical device OEMs.
We operate cold chamber high pressure die casting cells from 160 to 1,250 tons of cold chamber clamping force, producing castings from 20 g to 12 kg per casting at over 4 million die cast components per year. Tooling, casting, CNC machining after casting, surface finishing, assembly and inspection are all performed in our own facility.
Capability claims are easy to write and hard to verify, so here is the equipment behind ours, area by area.
| Area | Equipment | Capability |
|---|---|---|
| Melting and holding | Central melting furnaces with degassing and filtration | 660-700 °C, degassed melt for reduced gas porosity |
| Die casting | Cold chamber HPDC machines | 160, 280, 400, 630, 800 and 1,250 ton cells |
| Tool room | CNC milling, wire EDM, sinker EDM, surface grinding | In-house H13 die manufacture and modification |
| Trimming | Trim presses and deflashing stations | Gate, runner and flash removal |
| Machining | 3, 4 and 5-axis CNC machining centres | ±0.02 mm on critical features |
| Finishing | Shot blast, powder coat line, spray booth, polishing | Powder cure, wet paint, chromate, polish |
| Inspection | CMM, spectrometer, roughness tester, leak test rig | 0.003 mm CMM resolution |
| Assembly and packing | Insert presses, assembly benches, packing lines | Sub-assembly, leak test, export packaging |
Casting, tooling, machining, finishing, inspection and assembly all operate in the same facility, so parts are never shipped between vendors mid-process.
A wall thickness problem costs a sentence in a DFM report, a tooling modification after T1, or a scrap rate you live with for five years. It is the same problem at all three points; only the price changes. We front-load engineering effort because that is where it is cheapest.
When casting and machining sit at different companies, an out-of-tolerance bore becomes an argument. When they sit in one building under one quality system, it becomes a correction. We keep both in-house specifically to remove that failure mode.
Anodizing looks worse on die cast aluminum than on 6061. High pressure castings should not be T6 heat treated. Below 500 parts a year, machining beats casting. None of that helps us sell tooling, and all of it saves you a failed launch.
Your enquiry is read by a manufacturing engineer who opens the model, not by a sales agent who forwards it. That is why our DFM feedback arrives in days and why the answers you get reference your actual geometry.
We are not a general foundry that also runs aluminum. Every die, every process parameter and every finishing line in our facility is set up for aluminum alloys, which is why we can advise on alloy selection and wall thickness with confidence rather than guesswork.
Most die casters ship castings to a separate machine shop, which adds freight, delay and a second company to blame when a tolerance is missed. We cast, machine, finish and inspect in the same facility, so one company owns your entire tolerance stack.
Your enquiry goes to a manufacturing engineer who reads your drawing, not to a sales agent who forwards it. You get a written DFM report identifying what will cost you money before tooling is cut, not after first samples fail.
ISO 9001:2015 certified with CMM inspection, material traceability by lot, first article inspection on every program and documented process control. We supply the dimensional reports, material certificates and PPAP documentation your quality department needs.
We are structured for programs that run for years, not one-off orders. Tooling is stored and maintained at our facility, spare cores can be held for critical parts, and repeat orders ship in 15 to 20 days on existing dies.
Through our sister CNC machining operation we support the full aluminum lifecycle: machined prototypes to validate a design, die casting once volume justifies tooling, and machining after casting on the same parts. Your design does not need to change suppliers as it scales.
CharMax Precision also runs a dedicated aluminum CNC machining operation, machining parts from solid billet in wrought alloys such as 6061, 7075, 5052 and MIC-6. It is the right process for prototypes, low volumes and parts that need wrought-alloy properties or a Class A anodized finish. Same company, same quality system, different process.
CharMax Precision manufactures at 1st Floor, Building A, No. 3 South Fourth Street, Xiangmang West Road, Qingxi Town, Dongguan, Guangdong, 523660, China. Qingxi Town sits in the Dongguan manufacturing belt between Shenzhen and Guangzhou, roughly 90 minutes from Shenzhen Bao'an and Guangzhou Baiyun airports and within easy reach of Yantian and Shekou ports for sea freight.
We are a factory. The die casting cells, tool room, CNC machining centres, finishing lines and inspection room are our own equipment in our own facility, operated by our own staff. You can audit the plant, watch your T1 samples come off the machine by live video, and speak directly to the engineers running your program.
Both sites belong to CharMax Precision. charmaxprecision.com covers our aluminum CNC machining operation, which machines parts from solid billet in wrought alloys such as 6061 and 7075. charmaxdiecasting.com covers aluminum die casting for volume production. Many customers use both: machined parts to validate a design, then die casting once annual volume justifies tooling.
Our programs run from small equipment manufacturers ordering a few thousand parts a year to established OEMs running six-figure annual volumes. We are structured for long-run programs rather than one-off orders, so the best fit is a customer with a part that will be in production for years and who values engineering support over the lowest possible quotation.
English and Chinese. All drawings, quotations, inspection reports, certificates and correspondence are handled in English, and your day-to-day contact is a manufacturing engineer who reads technical drawings rather than a translator relaying messages.
We sign your NDA before receiving files and can sign a mutual agreement if you prefer. Your tooling is dedicated to your part and is never used for another customer, your drawings are not shared outside the engineering and production team assigned to your program, and we do not display customer parts or names in marketing material without written permission.
There is no rigid minimum once tooling exists, and we regularly run batches of 500 pieces. For new programs, the economics rather than a policy set the floor: below roughly 1,000 annual pieces, we will tell you honestly whether CNC machining from billet would serve you better.
Send your drawing and you will hear back from a manufacturing engineer who has read it. If die casting is not the right process for your volume, we will say so.