IU Eyewear is a factory-direct wholesale Ultem glasses frames supplier and manufacturer based in Danyang, China. We supply precision injection-molded Ultem optical frames — made from SABIC Polyetherimide (PEI) resin — to distributors, optical retailers, medical optical practices, and premium eyewear brands across Europe, North America, the Middle East, and Asia.
Wholesale Ultem glasses frames occupy a distinct and specialized position in the optical frame market — separate from both standard plastic frames and the more widely known TR90 category. Ultem (PEI) is an engineering thermoplastic originally developed for aerospace and medical device applications, valued in eyewear manufacturing for a unique combination of properties unavailable in any other frame material: exceptional structural rigidity under heat, a distinctive amber semi-transparency that no other plastic frame material replicates, and a biocompatibility profile that makes Ultem the preferred optical frame material for medical-adjacent optical markets and allergy-sensitive customer segments worldwide.
Unlike TR90 which excels in flexibility and impact resistance for children's and sport optical, wholesale Ultem glasses frames are defined by their dimensional stability under thermal stress, their premium semi-transparent aesthetic, and their position at the top tier of polymer optical frame pricing — making them the premium alternative to standard plastic frames for adult everyday and professional optical markets globally.
✅ In-stock Ultem frames ship in 5–10 working days
✅ Low MOQ from 100 pcs per model
✅ Genuine SABIC Polyetherimide (PEI) material
✅ OEM, ODM & private label supported
✅ Heat-stable to 170°C — superior to all other plastic frames
✅ Hypoallergenic — nickel-free, latex-free, biocompatible
Ultem is the trademarked commercial name for Polyetherimide (PEI) resin, originally developed and manufactured by SABIC (formerly GE Plastics). Ultem was first engineered for high-performance industrial applications — aerospace components, medical devices, and electrical insulation systems — where standard engineering plastics fail under thermal, chemical, or mechanical stress. Its adoption into premium eyewear manufacturing brought a uniquely capable material to wholesale optical frames: one that combines the processing advantages of injection molding with engineering-grade performance characteristics that standard optical plastics cannot approach.
The defining characteristic that separates wholesale Ultem glasses frames from all other plastic optical frame materials is thermal performance. Ultem PEI maintains full structural rigidity and dimensional stability at temperatures up to 170°C — compared to approximately 70–80°C for standard nylon plastic frames and 90–100°C for TR90. This means wholesale Ultem glasses frames will not warp, deform, or lose shape in environments — car dashboards, hot climates, outdoor high-heat use — where all other plastic optical frame materials fail.
The second defining characteristic is Ultem's distinctive amber-gold semi-transparency. Unlike opaque plastic or acetate frames, Ultem in its natural state has a characteristic warm golden translucency that creates a premium visual aesthetic unlike any other frame material. This signature appearance is a key brand differentiator for optical buyers building premium polymer frame collections — producing a distinctive look that customers immediately associate with quality.
Core material properties that define wholesale Ultem glasses frames:
· Heat resistance to 170°C — highest thermal stability of any optical frame polymer
· Distinctive amber semi-transparency — unique aesthetic unavailable in TR90 or standard plastic
· High structural rigidity — maintains shape under stress, heat, and daily wear
· Stable flexibility — bends without permanent deformation under normal adjustment forces
· Biocompatible — FDA-recognized material for medical device applications
· Hypoallergenic — free of nickel, latex, BPA, and phthalates
· Chemical resistance — unaffected by cleaning solutions, cosmetics, sweat, and UV exposure
· Low specific gravity — comparable to TR90 in weight class
· Injection-molded consistency — precise dimensional uniformity across large production batches
Wholesale buyers need a clear understanding of where Ultem sits within the polymer optical frame hierarchy — and how it differs from TR90, standard plastic, and acetate in ways that determine customer segment, retail positioning, and market strategy.
Feature | Wholesale Ultem Glasses Frames | TR90 Glasses Frames | Standard Plastic (Propionate) | Acetate Frames |
Heat resistance | 170°C — highest polymer | 130°C — high | 70–80°C — standard | 80–90°C — standard |
Signature aesthetic | Amber semi-transparency | Vivid opaque colors | Standard opaque | Rich layered patterns |
Flexibility | Moderate — stable & adjustable | Extreme — 180° memory flex | Low — deformation risk | Moderate — heat adjustable |
Impact resistance | High | Highest | Low to moderate | Moderate |
Weight | Ultra-light | Ultra-light | Standard | Light |
Hypoallergenic | Yes — biocompatible (FDA) | Yes | Generally yes | Yes |
Hot-climate suitability | Excellent — dominant choice | Good | Poor | Poor |
Medical market suitability | Excellent — FDA biocompatible | Good | Standard | Standard |
Retail price tier | Mid-premium | Value to mid | Value | Mid to premium |
Best market segment | Medical, hot-climate, adult premium | Children's, sport, active | Volume retail | Fashion, boutique |
IU Eyewear's wholesale Ultem glasses frames collection covers the full range of Ultem optical frame styles — from minimalist professional designs leveraging Ultem's natural amber aesthetic to fully opaque fashion colorways for broader market appeal. All styles are in stock for immediate wholesale ordering.
The signature wholesale Ultem glasses frames category — frames produced in Ultem's characteristic natural amber-gold semi-transparent finish, without surface coloring or coating. Natural amber Ultem optical frames have a distinctive warm translucency that immediately reads as premium quality to optical consumers — and that cannot be replicated by any other frame material. Popular with premium independent optical boutiques, medical optical practices, and optical buyers targeting professional adult demographics who appreciate understated, material-driven frame design. The dominant Ultem colorway in Japanese, German, and Scandinavian optical markets.
Wholesale Ultem glasses frames in fully opaque colorways — matte black, navy, grey, and brown — produced by pigment-loading the Ultem resin during injection molding. Opaque Ultem frames leverage the material's heat resistance and biocompatibility while producing a conventional frame aesthetic accessible to broader optical retail markets. Popular with optical chains and distributors seeking a premium polymer frame alternative to standard plastic in conservative professional and everyday optical collections.
The dominant wholesale Ultem glasses frames shape for professional and corporate optical markets — clean horizontal rectangle in full-rim and semi-rimless Ultem constructions. Available in both natural amber and opaque colorways. Strong wholesale demand in European professional optical markets, Japanese corporate eyewear segments, and North American professional optical practices where the combination of Ultem's light weight, heat resistance, and refined aesthetic is a compelling alternative to standard metal or plastic professional frames.
Round and oval wholesale Ultem glasses frames in fine-profile constructions — particularly striking in natural amber Ultem, where the semi-transparency creates a distinctive warm tone across the lens area. Popular with fashion-forward independent optical boutiques in Europe and premium optical buyers seeking a material-driven alternative to metal round frames in their mid-premium collection tier.
A specialized wholesale Ultem glasses frames category — optical frames specified for medical optical practices, hospital optical departments, and ophthalmology clinics where frame biocompatibility is a clinical requirement rather than simply a consumer preference. Ultem's FDA-recognized biocompatibility makes it the premium polymer optical frame material for medical environments. Available in conservative professional colorways with adjustable nose pad systems compatible with post-surgical fitting requirements.
A geographically specific wholesale Ultem glasses frames category targeting optical buyers in Middle Eastern, Southeast Asian, South Asian, and African markets where ambient temperatures regularly exceed the deformation threshold of standard plastic optical frames. Wholesale Ultem glasses frames in hot-climate configurations — including wraparound temple designs for secure fit in outdoor use — address a fundamental product failure point of standard plastic optical retail in tropical and desert-climate markets.
Heat resistance is the single most commercially important differentiating property of wholesale Ultem glasses frames — and the primary reason optical buyers in specific markets specify Ultem over all competing polymer frame materials.
Standard plastic optical frames — including propionate and standard nylon — begin to deform at approximately 70–80°C. TR90, while superior to standard plastic, maintains stability to approximately 130°C. Wholesale Ultem glasses frames maintain full structural integrity to 170°C — a temperature that far exceeds any real-world eyewear use scenario, including:
· Car interior temperatures — vehicles parked in direct sun in Middle Eastern and Southeast Asian climates routinely reach 80–100°C interior temperatures, deforming all standard plastic optical frames left inside
· Hot-climate outdoor ambient temperatures — sustained outdoor heat in GCC, South Asian, and African markets accelerates standard plastic frame deformation over months of daily use
· Optician heat adjustment — Ultem frames require no water bath or heat gun for temple adjustment — the material's flexibility allows cold adjustment, eliminating the heat-damage risk present with acetate and standard plastic frames
· Sterilization environments — medical optical practices requiring frame sterilization procedures benefit from Ultem's resistance to autoclave-adjacent temperatures
For wholesale buyers serving hot-climate optical markets, the commercial case for stocking Ultem glasses frames is direct: Ultem frames eliminate the primary customer complaint driving return visits and replacement purchases in standard plastic optical retail in these environments.
Ultem's injection-molded surface supports the following logo application methods — selected based on colorway, frame finish, and brand positioning:
· Silk screen printing — full-color logo on opaque Ultem temple arms — standard for most wholesale Ultem private label programs
· Pad printing — precise logo on curved Ultem surfaces across both amber and opaque colorways
· In-mold labeling (IML) — brand mark integrated directly into the Ultem injection mold — the most durable branding option, available for OEM Ultem frames with custom tooling
· Logo placement: inner temples, outer temples, nose bridge, endpieces
MOQ: 100 pcs per model. Branded samples on both natural amber and opaque Ultem provided before bulk production confirmation.
Build a premium polymer optical brand on IU Eyewear's wholesale Ultem glasses frames inventory — particularly suited to medical optical brands, hot-climate regional optical labels, and premium adult everyday eyewear collections. Our private label Ultem program includes laser engraving or silk screen logo on selected in-stock Ultem styles, custom branded premium cases and packaging, and colorway specification from available Ultem injection color options. No new mold investment required — fastest route to a credible premium Ultem optical brand.
Full OEM wholesale Ultem glasses frames manufacturing from your technical specifications — including custom frame geometry, proprietary Ultem colorway development, and hinge and nose pad configuration. IU Eyewear's Ultem OEM service covers: 3D CAD confirmation before mold development, custom injection mold tooling with ownership transfer to buyer, proprietary Ultem resin colorway formulation (amber tints, opaque colors, two-tone), in-mold logo integration, spring hinge and adjustable nose pad assembly specification, and EN ISO 12870 compliance testing for each custom OEM Ultem frame design. OEM Ultem frames lead time: 30–45 working days from design confirmation.
Our ODM program provides complete design-to-production support for exclusive wholesale Ultem glasses frames collections — from trend-aligned concept development targeting medical optical, hot-climate retail, or premium adult everyday market segments through mold development and bulk production. Design fee refundable on bulk order confirmation. Exclusive mold and design rights transferred to the buyer.
Genuine SABIC Polyetherimide — Verified Material Sourcing The wholesale Ultem glasses frames market contains material substitution risk — frames described as Ultem or PEI that are manufactured from lower-grade alternative resins without the thermal performance properties of genuine SABIC Polyetherimide. IU Eyewear sources Ultem resin exclusively from verified SABIC supply chain channels and provides material certification confirming genuine PEI composition for every wholesale Ultem frames order — protecting buyers from performance failures and compliance gaps.
Dedicated Ultem Injection Molding Production Ultem PEI requires higher processing temperatures than standard plastic or TR90 — approximately 340–400°C melt temperature — and dedicated injection molding equipment configured for PEI resin processing. IU Eyewear operates dedicated Ultem production lines separate from standard plastic frame operations, ensuring material purity, dimensional consistency, and colorway repeatability across wholesale Ultem glasses frames reorders.
Hot-Climate Market Expertise IU Eyewear has specific commercial experience supplying wholesale Ultem glasses frames to optical buyers in GCC, South Asian, and Southeast Asian markets — where Ultem's heat resistance addresses a documented product performance gap in standard plastic optical retail. We provide market-specific frame recommendations, colorway guidance, and compliance documentation for buyers entering or expanding in hot-climate optical markets.
Medical Optical Compliance Documentation Wholesale Ultem glasses frames for medical optical market buyers require documentation beyond standard optical frame certifications — including biocompatibility compliance references and material safety data sheets confirming FDA-recognized PEI material classification. IU Eyewear provides comprehensive material compliance documentation for medical optical buyers sourcing wholesale Ultem glasses frames for clinical environments.
Premium Aesthetic Differentiation — Natural Amber Collection IU Eyewear's natural amber Ultem glasses frames collection offers optical buyers a genuinely differentiated premium polymer frame aesthetic — the characteristic warm golden semi-transparency that no competing frame material can replicate. This material-driven design differentiation supports premium retail pricing and brand positioning for optical buyers building upscale polymer frame collections distinct from both standard plastic and acetate alternatives.
Middle East — Wholesale Ultem glasses frames are among the highest-demand premium polymer optical frame categories in the GCC market — driven directly by Ultem's heat resistance advantage in a region where standard plastic optical frames consistently fail under ambient temperatures. Strong wholesale demand from optical distributors in UAE, Saudi Arabia, Kuwait, Qatar, and Bahrain for natural amber and opaque Ultem frames in full-rim and semi-rimless constructions. A primary growth category for IU Eyewear's Ultem export business.
Europe — EN ISO 12870-compliant wholesale Ultem glasses frames for premium independent optical boutiques in Germany, the Netherlands, Switzerland, France, and the UK. Natural amber Ultem frames in minimalist rectangle and round shapes are a growing category in German-speaking optical markets — where material authenticity and engineering quality carry strong commercial weight with professional optical buyers and discerning optical consumers.
Japan & South Korea — Wholesale Ultem glasses frames enjoy strong demand in Japanese and South Korean premium optical markets — where material-driven design, extreme lightness, and semi-transparent aesthetics align with the dominant optical retail values in these markets. Japanese face-fit specifications (low bridge, narrow temple) available across the Ultem collection.
Southeast Asia — Form E (ASEAN FTA) available for duty reduction on wholesale Ultem glasses frames imports. Strong and growing demand in Vietnam, Thailand, Singapore, and Malaysia — driven by both Ultem's heat resistance in tropical climates and its premium positioning in developing optical retail markets seeking differentiation from standard plastic frames.
USA & Canada — ANSI Z80.1-compliant wholesale Ultem eyeglass frames for premium independent optical practices, medical optical departments, and specialty eyewear importers. Growing demand from medical optical buyers and allergy-specialist optical practices specifying Ultem's biocompatibility for sensitive-skin and post-surgical patient populations.
South Asia — Wholesale Ultem glasses frames for optical distributors in India, Pakistan, Bangladesh, and Sri Lanka — where tropical climate conditions make Ultem's heat resistance commercially relevant, and where growing premium optical retail markets are creating demand for differentiated polymer frame categories above standard plastic optical retail price points.
What exactly is Ultem and how is it different from TR90 and standard plastic frames?
Ultem is the trade name for Polyetherimide (PEI) resin manufactured by SABIC — an engineering thermoplastic originally developed for aerospace and medical device applications. The key differences from TR90 and standard plastic are: heat resistance to 170°C (versus 130°C for TR90 and 70–80°C for standard plastic), a distinctive amber semi-transparency unique to Ultem PEI, and FDA-recognized biocompatibility that makes Ultem the premium polymer choice for medical optical markets. TR90 excels in flexibility and impact resistance for children's and sport optical; Ultem excels in heat resistance, biocompatibility, and premium aesthetics for adult everyday, medical, and hot-climate optical markets.
What is the MOQ for wholesale Ultem glasses frames?
MOQ starts from 100 pcs per model for both in-stock Ultem frames and custom logo Ultem eyewear. Different Ultem frame styles can be mixed within one shipment at 100 pcs MOQ per model. For OEM Ultem frame production with custom molds, MOQ and tooling investment are discussed per project based on design complexity and production volume.
What is the lead time for wholesale Ultem glasses frames?
In-stock wholesale Ultem glasses frames ship within 5–10 working days after payment. OEM custom Ultem frame production takes 30–45 working days from design confirmation. Colorway-variation OEM (custom colors on existing Ultem molds) takes 25–35 working days.
Why are wholesale Ultem glasses frames the best choice for hot-climate markets?
Ultem PEI maintains full structural integrity at temperatures up to 170°C — far beyond the deformation threshold of TR90 (130°C), standard plastic (70–80°C), or acetate (80–90°C). In Middle Eastern, South Asian, and tropical Southeast Asian markets, vehicle interior temperatures, outdoor ambient heat, and storage conditions routinely exceed the performance limits of standard plastic optical frames — causing warping, deformation, and premature product failure. Wholesale Ultem glasses frames eliminate this product failure mode entirely, reducing customer complaints, return rates, and warranty costs for optical retailers in hot-climate markets.
Are wholesale Ultem glasses frames suitable for medical optical markets?
Yes. Ultem PEI is an FDA-recognized biocompatible material — the same classification that qualifies it for medical device applications. This biocompatibility makes wholesale Ultem glasses frames the preferred polymer optical frame for medical optical practices, hospital optical departments, and ophthalmology clinics where frame material safety is a clinical consideration. IU Eyewear provides material safety data sheets and biocompatibility compliance documentation for medical optical buyers.
What is the distinctive amber color of Ultem glasses frames and is it available in other colors?
Natural amber is the characteristic color of unmodified Ultem PEI resin — a warm golden semi-transparency that is a unique signature of the material and unavailable in any other optical frame polymer. This natural amber aesthetic is a key premium differentiator for wholesale Ultem glasses frames. Ultem is also available in fully opaque colorways — matte black, navy, grey, brown — by pigment-loading during injection molding. Custom proprietary colorways, including tinted semi-transparent Ultem, are available for OEM production with custom molds.
Can I add my logo to wholesale Ultem glasses frames?
Yes. Laser engraving is the primary branding method for natural amber Ultem frames — producing a distinctive engraved mark with a unique visual effect through the semi-transparent amber material unavailable on any other frame. Silk screen printing and pad printing are used for opaque Ultem colorways. In-mold labeling (IML) is available for OEM Ultem frames. MOQ 100 pcs per model.
How do I verify that your wholesale frames are genuine Ultem (PEI) and not a substitute material?
IU Eyewear provides SABIC Polyetherimide material certification confirming genuine PEI resin composition for wholesale Ultem glasses frames orders — protecting buyers from material substitution risk. We can also provide DSC (Differential Scanning Calorimetry) thermal analysis confirming PEI glass transition temperature as an additional material verification option for buyers with strict material compliance requirements.
Are wholesale Ultem glasses frames adjustable by opticians?
Yes. Wholesale Ultem glasses frames can be cold-adjusted by opticians — temples and nose pad arms can be repositioned under normal manual adjustment force without heat treatment. Unlike acetate frames which require heat gun or water bath adjustment, Ultem's stable flexibility allows direct cold adjustment — simplifying optician workflow and eliminating heat-damage risk during frame fitting.
Combine wholesale Ultem glasses frames with other material categories to build a complete optical collection across all market segments and price tiers:
· Wholesale TR90 Glasses Frames — Flexible, impact-resistant polyamide frames · Extreme bend-and-return flexibility · Best for children's optical & sport eyewear
· Wholesale Acetate Glasses Frames — Premium cellulose acetate optical frames · Rich layered colors & tortoiseshell patterns · Best for fashion brands & optical boutiques
· Wholesale Metal Glasses Frames — Stainless steel, monel & nickel-free alloy frames · Slim professional constructions · Best for corporate & professional optical markets
· Wholesale Titanium Glasses Frames — Ultra-lightweight pure titanium & beta-titanium frames · Argon-welded premium construction · Best for luxury optical markets
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