Eyewear Frames Quality Verification & MOQ Guide 2026: Acetate, Titanium & TR90 OEM Standards | SCM Group HK

For optical brands and retailers sourcing custom eyewear frames from China in 2026, understanding quality verification standards and minimum order quantities (MOQ) is essential to avoiding costly mistakes. The private label eyewear market is thriving globally, with China supplying the majority of the world's acetate, titanium, and TR90 frames. However, quality levels vary significantly between factories, and without proper verification protocols, buyers risk receiving non-conforming product. International standards EN ISO 12870 (EU) and ANSI Z80.1 (US) define the minimum mechanical and chemical performance requirements for ophthalmic frames. Quality testing protocols include salt spray and sweat resistance testing (48–72 hours minimum for metal and titanium frames), high-temperature stability (+80°C, 24 hours), low-temperature brittleness (-40°C, 4 hours), and UV color fastness testing. MOQs in 2026 range from 100 to 600 pieces per model depending on material and factory scale, with titanium frames generally carrying higher MOQs due to complex manufacturing processes.

Material-Specific Quality Standards and Testing Requirements

Acetate frames are tested for hinge strength (minimum 500 open/close cycles without deformation), spring hinge fatigue resistance, and solvent resistance. Color consistency is verified using spectrophotometric measurement with ΔE tolerance of ≤2.0 between batch samples. Titanium frames require confirmation of alloy grade (Grade 1 pure titanium or Grade 5 Ti-6Al-4V for high-strength applications), weld integrity via dye penetrant testing, and surface hardness (typically 300–400 HV after PVD coating). TR90 (nylon memory) frames are tested for flexibility recovery (must return to original shape after 90° deflection) and chemical resistance to common cleaning agents. All frames exported to EU markets must demonstrate EN ISO 12870 compliance, including nose pad detachment force greater than 20N and temple hinge torque within 0.3–1.0 Nm range.

MOQ Structures and Sampling Process

Understanding MOQ structures helps buyers plan inventory and cash flow effectively. In 2026, standard MOQs for Chinese OEM eyewear factories are: acetate optical frames 300–400 pcs per model (typically 2–3 colors), metal and titanium optical frames 300–500 pcs per model, TR90 sports frames 300–600 pcs per model, and sunglasses 200–400 pcs per model. Some factories offer lower MOQs of 100 pcs with premium pricing for initial orders. The sampling process typically takes 2–4 weeks: design confirmation, material selection, sample production, sample review, revision if needed, and pre-production approval. Request pre-production samples in production materials, not prototype materials, to accurately assess final quality. SCM Group HK coordinates the full sampling and approval process between overseas buyers and verified Chinese eyewear factories.

Incoming Inspection and Compliance Verification

Even with a qualified factory, incoming inspection at the Chinese port is essential before shipment. Key inspection points include: frame dimension check against approved drawings (±0.3mm tolerance), hinge operation quality, surface finish uniformity, color matching to approved standard, marking requirements (brand, material, country of origin), and packaging condition. For EU exports, request a Declaration of Conformity and ensure the factory can provide test reports from accredited laboratories (ISO/IEC 17025 certified). CE marking for ophthalmic products is supported by EN ISO 12870 compliance testing. SCM Group HK arranges factory audits and pre-shipment inspections on behalf of clients, providing photo reports and non-conformance tracking.

Contact SCM Group

Sourcing custom eyewear frames from China with verified quality? SCM Group HK manages the full process from factory qualification to pre-shipment inspection. Email: scmgroup@scmgroup.online | WhatsApp: +86-198-7525-3287