About Jack
Jack Cheng.
JCH Design & Manufacturing is Jack Cheng’s tooling and contract-manufacturing company: he runs US programs from the drawing to the dock, speaking English with you and Mandarin on the floor.
Jack makes getting a product made easy. One stop: consult, reverse-engineer, tool, assemble, inspect, and watch the line in Taiwan, China and Vietnam. You deal with him. His own engineers, inspectors and translators, plus qualified third-party factories. He does not own the plants.
Jack speaks English with you and Mandarin on the floor. Vietnamese translators sit with his inspectors in Vietnam. Call or text (321) 323-4474 — he answers himself. jack@jchtrade.com. Line watch › · Why Taiwan is not China for US duty ›
Jack
The man you deal with.
Fifteen years between the United States and Taiwan. He flies for programs, not for meetings. He has worked with manufacturers across Taiwan, China and Vietnam — a fastener to spec at one end, a finished consumer product into volume at the other. Taiwan is a small island. He knows the tool shops, the machine shops, the packers. He speaks to the toolmaker in Mandarin and to you in English, about the same drawing.
Jack Cheng
Principal. English and Mandarin. Specifies the tool. Answers the phone.
Floor engineers
His people, on partner lines in Taiwan and China. First article, process window, the swap.
Line inspectors
Incoming material, in-process checks, pre-ship. Quantity and grade — not only cosmetics.
Vietnamese translators
Sit with the inspectors in Vietnam so the floor and the drawing stay the same sentence.
What we are, said plainly.
Most sourcing companies are vaguer than this on purpose. We'd rather lose a program early than win it on a misunderstanding. The programs Jack has run are on the work page.
We don't own factories
Jack has his own engineers, assemblers and production people. Manufacturing also runs at partner factories. What we own is the engineering, the qualification, the inspection and the contract — not the plants.
The certification isn't ours
Our partners hold it. We'll name them and send it on request. We won't show another company's certification mark as if it were ours; the seals on the certifications page are illustrations of standards we can source to, not certification marks.
Warehousing is leased
Commercially, on ordinary terms. It's an option for landing your goods, not an owned third-party logistics network.
We publish no guarantee
No service-level promise, no blanket rework pledge. Anyone offering those on a website hasn't priced them.
Questions we are actually asked
The things people want to know before they send a drawing.
Written the way they get asked, because that is how people search now — typed into Google, or asked out loud to an assistant. More answers, grouped by topic, are in the buyer FAQ.
Who can reverse-engineer an existing product and put it into production?
Jack does this directly. Send a physical sample, a competitor product, a drawing, or just a photograph, and he works back to a manufacturable design, specifies the tool, and runs production at qualified factories.
How do I find a manufacturing partner in Asia without a sourcing agent?
You speak to the principal instead. Jack has spent fifteen years moving between the United States and Taiwan, he knows the toolmakers personally, and he is on the floor when a first article is measured. Nothing is lost in a handover, because there is no handover.
Can you build tooling from just a sample or an idea?
Yes. Tooling starts from whatever you have. CAD, design for manufacture, cavity layout and piece-price math all happen before any steel is cut.
Do you handle electronics as well as plastics?
Yes, and it is one of the deepest areas — component sourcing, schematic and PCB development, firmware and functional test, through finished assembly on Jack’s own line and at qualified third-party factories.
Do you have your own team?
Yes. Engineers, assembly and production people of his own, and qualified third-party factories when the program needs them. You still deal with Jack. He does not claim to own the plants.
Can you babysit quality on manufacturing I already have running?
Yes. That is line watch. First article, in-process checks, pre-shipment inspection, quantity and grade. Jack speaks Mandarin on the floor. Vietnamese translators sit with his inspectors in Vietnam. You still deal with him. How line watch works ›
Does Jack speak Mandarin?
Yes. English with you. Mandarin on the floor in Taiwan and China. The drawing does not get rebuilt from a WhatsApp photo.
What does it cost to get a product tooled?
It depends on part size, cavity count and annual volume, and you will get a realistic range early rather than a number designed to win the job. If a tool won’t pay for itself yet, Jack will say so and suggest the cheaper first step, such as samples or a short run. Typical ranges are in what an injection mold really costs.
Can I move tooling away from a factory I already use?
Yes, and the physical work is routine — tools are audited, crated, shipped, re-qualified and re-sampled before production restarts elsewhere. What traps people is permission rather than logistics, so settle who owns the tool and who has to agree to it leaving in your own contract, before you pay for steel.
What kinds of companies do you work with?
Companies of every size, and inventors starting with nothing but an idea. No job too small, and none too big: any volume, from one part to millions. Most are short of hands and cannot justify building an engineering department to get one product made. Usually the demand is not the problem — the people are. A retirement takes the tooling knowledge with it, or the line cannot be staffed, and the program stalls for want of someone who has done it before. Production runs at whatever volume is required.
What happens after I send an inquiry?
Inquiries go to Jack, not a queue. He answers them himself. If your product suits the factories he uses he will say so and explain why; if it does not, he will tell you plainly and, where he can, point you toward someone better placed to make it.
Ask us the hard questions.
We’d rather answer them now than have you discover the answers at lot three.
Ask for time with Jack