Quality by design, proven over a decade.
An injection-molding partner built on organization and proof.
Lianbo is an injection-molding factory — the partner you call when the part has to be right and on the dock when promised. We turn engineering plastics, TPE, and commodity resins into precision molded parts, and we hold the line on consistency.
We run the full process in-house in Dongguan — material formulation, tooling, molding, finishing, and assembly — across 22 injection machines, with every batch tracked and every parameter recorded.
Not shallow coverage of everything. What we make, we make right.
Our core strength. TPE molding brings its own problems — large-area surface defects, whitening, oil bleed, flash, and unstable shrinkage. We get them right before the first shot.
Less labor, more consistent precision — batch after batch, year after year. A range of automation on the floor:
What happens after the part is molded:
We support your project from drawing to production:
Over a decade of disciplined quality control has kept our promise to customers — with measurable results.
In 10+ years. Our quality system catches issues before products leave the factory.
Every order, every deadline. Production planning keeps your supply chain moving.
In 10+ years. Rigorous process control keeps customer issues to an absolute minimum.
Trusted by hearing-aid brands worldwide. Consistent quality across tens of millions of parts — recognized, quietly, by the customers who count on us year after year.
We do not lose your trust. And your parts feel it.
But how do you read a shop in a few minutes — and know it's one you can trust?
A tidy workshop is the simplest test there is. Walk in: if the floor is clean, machines are uncluttered, and nothing is piling up in the corners, that comfort is worth trusting — a reliable shop usually feels reliable the moment you step in.
Details like these cannot be staged; order on the floor is management you can see.
A well‑ordered production line safeguards both your quality and delivery. We uphold this standard across every shift.
Mastery is depth, not breadth: understanding a material and a process well enough that quality is repeatable by method, not by luck.
We care about the people who make your parts and the world they make them in — so the choices follow.
The floor, as it actually is — organized, consistent, and quietly precise.
Every part is protected through the whole process — from the moment it leaves the mold to the moment it ships. Each tray slot holds a fixed count, stacked in order and kept clean — no contamination, no mix-up. We care about every single product that leaves here; that is what every step is for.
Installed where people work. If a chemical or irritant reaches a worker's eyes, those first seconds of flushing can save their sight.
This unit sits beside a single machine. It grinds that machine's runners and sprue on the spot, then feeds the regrind back into the same hopper at a controlled ratio. Off-cuts return to the part instead of the bin — less material wasted, the same resin every run.
Plants grow around the building — keeping the air lighter and the place human. Care is not a slogan; it is part of the environment we run.
Order at the bench is how consistency reaches the part.
Each mold has a fixed place, an ID tag, and a maintenance log. Your tooling is stored, serviced, and pulled on schedule — accounted for the whole time it is with us.
The right way to prevent problems is to characterize and analyze root issues thoroughly. We use different tools for each project and product — building custom instrumentation when no commercial solutions exist. Validated experience is codified into rules and work instructions, removing reliance on guesswork and subjective experience.
Exhaust from the floor is collected through ducts and treated on site before release — the air stays clean for our people and the neighborhood. Responsibility is not a line in a report; it is equipment we actually run.
This is how the finished-goods area looks every day — labeled, batch-tracked, floor clear. A warehouse this ordered is what makes your delivery date a commitment, not a hope. Clean floors are not decoration; they are how we work.
The recycled compound we run — traceable, consistent, and lighter on the planet.
Named Supplier of the Year by our customers — year after year, without exception.
Certified since 2018, recertified in 2024. The standard we run on — not the certificate we hang.
Environmental responsibility is not an afterthought — it is built into how we operate, from the power we buy to the waste we recover.
Get in touch with our team for a quote or to discuss your custom molding needs.
Dongguan, Guangdong, China
Within 24 hours on business days
ISO 9001:2015 Certified
Most custom molds run about 4 weeks from released drawing to first-trial samples, depending on part complexity. You get our DFM and engineering feedback within 24 hours on business days — so you're never waiting blind.
Yes. The whole chain runs under our own roof in Dongguan — compound, tooling, molding, finishing, assembly — across 22 machines, with every batch tracked and every parameter logged. Every mold carries its own ID and service history.
Before any steel is cut, we work the project with you: DFM review, mold-flow analysis, warpage and shrink prediction, pre-tooling simulation, and material selection — all in-house, so tooling risk drops before it costs you.
We've molded recycled compound since 2016, sourced from suppliers like LG rather than from our own shop-floor scrap — so it's traceable and consistent batch to batch. Waste gas is treated on site and not released directly.
Roughly 60% of our power is clean — mostly hydro and solar, with far less coal burned. It's how we run the plant, not a paid option.