China Top Rimless Optical Frames Suppliers & Exporter

Stress cracking is prevented through a three-stage mechanical safeguard: First, our tooling utilizes specialized step-drills that ream the hole and chamfer the rim simultaneously at 18,000 RPM under coolant spray, removing microscopic crack-initiation burrs. Second, we integrate high-elasticity polytetrafluoroethylene (PTFE) or polyoxymethylene (POM) compression collars between the metal prongs and the lens cavity, guaranteeing zero metal-to-glass contact. Third, we mandate lens substrate compatibility guidelines (recommending high-impact polyurethane MR-8 or polycarbonate with minimum 2.0mm edge thickness for drill mounts) to all purchasing distributors.

Pure Titanium (commercial grades 1 through 4) possesses exceptional biocompatibility, zero nickel content, and high ductility, making it the ideal raw material for the nose bridge and adjustable nose-pad arms where the dispensing optician must manipulate angles to fit varied facial structures. Conversely, Beta-Titanium is an alloy enriched with vanadium, chromium, and aluminum; it possesses extreme elastic recovery and high tensile strength. We specify Beta-Ti for the ultra-thin temple arms to ensure spring tension that securely grips the cranium without requiring heavy screw-driven spring hinges.

For custom private label OEM rimless collections requiring proprietary bridge tooling and laser-engraved temple branding, our standard MOQ is 300 pieces per model (divided into 2-3 electroplating colorways such as IP Matte Gunmetal, IP Rose Gold, and Polished Silver). For our ready-to-ship inventory chassis, MOQ is as low as 50 pieces. Custom prototyping requires 15 business days for 3D tooling and physical sample delivery, while full-scale mass production orders average 45 to 60 calendar days post-approval of golden samples.

We utilize physical vapor deposition (PVD) vacuum ion plating rather than basic wet galvanic dipping. After an intensive 7-stage ultrasonic degreasing process, frames enter a high-vacuum chamber where titanium ions are bombarded onto the metal substrate alongside inert nitrogen gas, creating a protective ceramic-like hard coat layer measuring between 0.3 to 0.5 microns. This surface delivers superior surface hardness (exceeding 2000 HV), making it immune to acidic human sweat, UV radiation, and seawater exposure in strict accordance with ISO 12870 standard test protocols.

Yes. A major pain point for optical retail chains is the lack of standardized repair consumables. For all private label contracts, we supply custom-branded accessory kits containing exact-tolerance drill-mount compression pliers, barbed pin-cutting tools, replacement POM double-sleeves, screwless plastic anchors, medical-grade silicone nose pads, and digital lens-drilling coordinate templates compatible with Briot, Nidek, and Essilor automated edgers.

We provide full legal documentation sets with every commercial shipment: For the European Union, we supply CE Declarations of Conformity under Medical Device Regulation (EU) 2017/745 (MDR Class I for optical frames) and EN ISO 12870:2018 technical documentation. For the United States, our shipments are cleared under our active FDA Device Facility Establishment Registration and Device Listings, alongside third-party REACH Regulation (EC) No 1907/2006 test certificates verifying non-detectable nickel release rates (<0.5 μg/cm²/week).