Meng Tai Eyewear is an OEM and ODM manufacturer of sunglasses and optical
frames. Tooling, injection, co-injection, painting, lens processing, assembly
and testing all happen inside one building in Tainan — which is why a mold
revision takes hours here instead of weeks.
Meng Tai Eyewear Co., Ltd. (孟岱眼鏡股份有限公司) was founded by Mr. Hsu in
1985 and is still run by the same family. From a 2,100 m² plant in Tainan we
build frames and lenses for more than a hundred eyewear brands and assemblers
around the world.
Everything that turns a drawing into a packed carton is under our own roof:
the mold shop that cuts the tool, the presses that run it, the paint line, the
lens department, and the test lab that signs it off. Nothing critical is
subcontracted, so when a sample needs changing we change it ourselves.
OEM and ODM — from your drawing, or developed with you from a concept
Tooling we cut, own and maintain, protecting your design
Direct communication in English and Mandarin
Portfolio
Seven categories, one factory.
The same processes cover very different products — a wrap-around cycling
shield and a pair of children's reading glasses come off the same floor.
Fashion Eyewear
Lifestyle Eyewear
Sports Eyewear
Performance Eyewear
Safety Eyewear
Kids Eyewear
Reading Glasses
Product Customization
Take an existing style from our library and make it yours — colours, lenses, logo, packaging.
Design Modification
Refine a design you already have so it fits better, moulds better and costs less to build.
Production Development
Bring a concept or a sketch and we take it through to a production-ready product.
Capabilities
From mold steel to packed carton.
Eight departments, all in the same building. Any one can be quoted on its own,
or run together as a finished product.
01
Design & Development
Concept, sketch, 2D and 3D CAD, then a printed prototype on our own
machines — so a shape can be held in the hand before any steel is cut.
02
In-House Tooling
Our mold department builds, repairs and modifies the tools we run —
milling, EDM, drilling and hydraulic clamping on site. Your tooling never
leaves the building.
03
Injection Molding
Nineteen presses — eleven standard injection and eight co-injection units
— running fronts and temples in PC, TR90, PA12, PA66 and TPEE/TPR.
04
Co-Injection & Over-Molding
Soft-touch temple tips, dual-colour fronts and rubberised grips bonded in
the mold rather than glued on afterwards, so the joint does not peel in
service.
05
Semi-Automated Production
Robot cells handle degating and gate trimming straight off the press —
consistent parts, fewer handling marks, and people freed for work that
needs judgement.
06
Painting & Finishing
Spray coating, pattern transfer, vibratory tumbling and polishing — plus
logo application by heat stamping, printing, laser engraving or metal
badge.
07
Lens Processing
CNC lens cutting, laser etching and lens printing in house, so lens and
frame are matched to each other rather than to two suppliers' tolerances.
08
Assembly & Final QC
Hand assembly, dimensional check against the drawing, and packing to your
carton and labelling specification.
Frame production
Five steps, one building.
A frame front passes through all of these before it reaches assembly — and
never leaves the site in between.
1
Injection
The base part is shot in the chosen polymer.
2
Co-Injection
Second material over-molded for grip and colour.
3
Painting
Spray coating and pattern transfer finishes.
4
Tumbling
Vibratory media smooths edges and surfaces.
5
Finishing
Heat stamping, printing, laser engraving, metal logo.
Materials
The polymers we run every day.
Each behaves differently in the mold. These are the ones our process windows,
drying schedules and tooling are already set up for.
MaterialTypical useWhy it is chosen
PCPolycarbonateSports and safety fronts, templesHigh impact resistance and optical clarity; takes a glossy finish straight from the tool.
TR90Polyamide elastomerLightweight optical framesVery light, flexible and skin-friendly; returns to shape after bending.
TR90 NZZUnpigmented gradeTranslucent and custom-tinted framesRuns as a natural base for in-house colour matching rather than pre-compounded stock.
PA66Nylon 6/6Structural fronts, hinge areasStiff and dimensionally stable under load and heat; good for insert molding.
PA12Nylon 12Premium frames and templesLow moisture uptake, excellent chemical resistance and a warm, soft feel.
TPEE / TPRThermoplastic rubberTemple tips, nose pads, gripsSoft and grippy; co-injected onto the rigid part so it cannot come loose.
Sustainable options
Where a brand needs a recycled or bio-based story, we run
recycled PC, recycled TPR and
bio-based TR90 (G850), and can supply recycled packaging to match.
Lenses
Cut, coated and matched in house.
Lens work is a department here, not a purchase order. Cutting, etching,
printing and fitting all happen beside the frame line.
Lens materials
Polycarbonate (PC)
Nylon
TAC polarized
PC polarized (PCPL)
Nylon polarized
Treatments & finishes
Multilayer mirror coatings
Photochromic
High-contrast tints
Gradient tints
Blue-light filtering
Infrared (IR) filtering
Quality assurance
We test to the standard before you have to.
Our own lab runs the optical and mechanical tests that eyewear standards call
for, so problems are found here rather than at your inspection — or your
customer's.
ISO 12312-1ANSI Z80.3AS/NZS 1067GB 10810.3
UV-VIS spectrophotometer — transmittance, UV380 / UV400 blocking, category and colour limits, checked against four market standards at once.
Optical Test
Refractive power, astigmatism and prismatic imbalance, left and right lens together.
Resolution Test
Sunburst and resolution charts viewed through the lens to catch distortion.
High Velocity Impact
A steel ball fired at the lens on a head form, to the speed the standard specifies.
High Mass & Drop Ball
Dropped mass onto the mounted frame, checking nothing fractures or releases.
Deformation Test
Repeated opening and closing — up to 10,000 cycles — watching for permanent set.
Endurance Test
Spring hinges cycled under load until the count is met, not until they fail.
Abrasion Test
Weighted steel wool across the coating, to see how the finish survives real use.
Fit & Alignment
Frames measured on a head form for pantoscopic tilt, wrap and symmetry.
Compliance
Audited, documented, and open to inspection.
Brands selling into Europe, North America and Australasia are asked to prove
where their products come from. Here is exactly where we stand on each
framework — including the ones still in progress.
Quality managementISO 9001:2015Certified by DZCCCertified · September 2026Social complianceamfori BSCIAudit scheduled · October 2026SustainabilityGRSGlobal Recycled StandardIn preparationThird-party testingSGS · Intertek · ICSUsed on customer request
Machine guarding, operating procedures and per-machine inspection records are
documented and kept current across all 37 machines on the floor — the same
records the BSCI audit will draw on. Customer audits of the facility are welcome
at any time, and we would rather show you an honest status than a logo we have
not earned yet.
Development
How long it actually takes.
Two routes, depending on whether you are adapting a style we already tool or
starting from a blank page. Reference figures — complexity, materials, testing
and approval speed all move them.
Existing Style Customization
13–16 weeks ≈ 2.5–4 months
Style selection1–2 weeks
Customization1–2 weeks
Sampling2–3 weeks
Approval1 week
Production8 weeks
New Style Development
25–30 weeks ≈ 5–6 months
Concept & sketch1 week
2D & 3D design2–3 weeks
Prototype2 weeks
Approval — pricing & details1 week
Tooling8–10 weeks
First shot & approval1 week
Sampling & approval2–3 weeks
Production8 weeks
Why Meng Tai
What you get by working with a factory this size.
01
Forty years of eyewear expertise
Building frames since 1985 — and only frames. The knowledge is in the building, not in a manual.
02
Fast, flexible development
Small enough that the mold maker and the press operator talk to each other the same morning.
03
Integrated in-house manufacturing
Tooling, molding, painting, lenses and assembly under one roof, so nothing waits on a subcontractor.
04
Reliable, consistent quality
Checks at every stage and a test lab that measures to the standard rather than to opinion.
05
Competitive OEM / ODM solutions
Honest trade-offs between quality, lead time and cost — and a straight answer when something will not work.
Responsibility
For our people and the environment.
Green energy
Reducing the plant's environmental impact through solar generation on site.
Sustainable materials
Recycled and bio-based options for both the eyewear and its packaging.
Process efficiency
Improving output while cutting the material used to get there.
Workplace safety
Proper PPE, guarded machines and documented safe operating practices.
Contact
Send us a drawing.
The fastest way to get a real answer is a 2D drawing, a 3D file or a physical
sample, together with your target quantity, material and market. We will come
back with feasibility, a tooling approach and a price — or tell you straight
away if it is not a good fit for our floor.
