How are frame quality issues handled after shipment? Short answer: After shipment, frame quality issues are usually handled through a clear claim process. The buyer submits evidence, the factory reviews it against AQL and agreed specifications, and then a resolution follows—replacement, refund, credit, or repair. Clear timelines and defect definitions help both sides avoid disputes. Frame...

What quality documents should a manufacturer provide? Short answer: A reliable eyewear manufacturer should provide inspection reports, material declarations, certificates of analysis (COA), test reports, and packaging or shipping documents. Depending on your market, you may also need nickel release reports, UV test reports, and declaration of conformity. These documents help B2B buyers set a...

Do optical frames require FDA 510(k) clearance? Short answer: In most cases, no. Standard optical frames are generally not classified as medical devices by the FDA, so they usually do not require 510(k) clearance. However, prescription lenses, certain sunglasses, and products with medical claims may fall under FDA rules. Always check the FDA product classification database for your exact pro...

What does frame durability testing involve? Short answer: Frame durability testing involves mechanical, chemical, and visual checks that simulate real-world use. It usually covers hinge fatigue, frame strength, lens rim stability, corrosion resistance, sweat exposure, coating adhesion, and finish wear. The aim is to confirm that eyeglass frames can survive daily handling, shipping, and long-...

How much do eyeglass frame samples cost? Eyeglass frame samples typically cost between USD 20 and USD 150 per piece, depending on material, customization level, and whether a new mold is required. Stock frames are cheapest, ODM modifications cost more, and full OEM samples with new tooling are the most expensive. Most factories deduct the sample fee from the bulk ord...

What is the production lead time for custom frames? Custom frame production lead time typically ranges from 45 to 75 days after sample approval, depending on the material, structure, and order volume. The full timeline includes order confirmation, sampling, sample approval, bulk production, quality inspection, and shipment preparation. Stock customization is faster a...

Can I get a discount for bulk orders? Yes, most eyewear factories offer tiered discounts for bulk orders, typically starting at 300 pieces and increasing at 500, 1,000, and 3,000 pieces. The discount is usually a percentage reduction on the unit price, and it can be combined with mixed-model orders as long as the total quantity meets the tier. Freight, packaging, and...

What is an acceptable defect rate for frames? An acceptable defect rate for eyeglass frames depends on the AQL level agreed between buyer and factory. For most wholesale orders, AQL 2.5 for major defects and AQL 4.0 for minor defects is the industry standard. This means a batch is acceptable if the sample shows defects below those limits. Anything above is rejected o...

What is the warranty on wholesale eyeglass frames? Most wholesale eyeglass frames carry a 12-month warranty from the date of shipment, covering manufacturing defects such as broken hinges, loose welds, plating failure, and structural cracks. The warranty does not cover accidental damage, normal wear, or improper use. Claim terms, coverage scope, and replacement polic...

How do I verify an eyewear manufacturer is legitimate? To verify an eyewear manufacturer is legitimate, check five things: legal registration, factory address, live video tour, production records, and third-party certificates. Legitimate factories will provide all five without hesitation. Scam suppliers avoid video calls, use vague addresses, and demand full payment ...

What is an eyewear factory audit and why does it matter? An eyewear factory audit is an independent on-site evaluation of a supplier's production capacity, quality management system, social compliance, and traceability. It answers one core question: can this factory consistently produce the approved product on schedule, with documented evidence? For importers and eye...

What is the ISO standard for eyeglass frames? The main ISO standard for eyeglass frames is ISO 12870, titled "Ophthalmic optics — Spectacle frames — Requirements and test methods." It defines the minimum requirements for spectacle frames, including dimensional accuracy, mechanical strength, thermal stability, corrosion resistance, and material safety. In Europe, the ...

What quality tests are done on eyeglass frames? The main quality tests on eyeglass frames are hinge fatigue testing, salt spray corrosion testing, nickel release testing, tensile and drop testing, sweat resistance, color fastness, and dimensional stability. These tests confirm that a frame can survive daily wear, meet market regulations, and protect brand reputation. For B2B buy...

How do I check the quality of eyeglass frames? To check the quality of eyeglass frames, inspect six points: hinge action, weld joints, surface finish, frame alignment, screw tightness, and material feel. A quality frame opens smoothly, sits flat, has clean edges, and shows no gaps or rough spots. For B2B buyers, a written inspection checklist plus AQL sampling reduces returns an...

What is the process of custom frame development? Custom frame development follows seven main steps: requirement discussion, design drawing, engineering review, prototype or 3D printing, mold making, sample approval, and bulk production. Each step has its own timeline and decision point. Buyers who understand this process can plan launches more accurately, avoid delays, and contr...

How much does it cost to develop custom eyeglass frames? Developing custom eyeglass frames typically costs from a few hundred to several thousand US dollars, depending on the material, complexity, and order volume. The total includes tooling or mold cost, engineering and sample fees, and unit cost per frame. Stock customization and ODM modification cost far less than full OEM de...

Can I get custom eyeglass frames made? Yes, you can get custom eyeglass frames made. There are three main production paths: full OEM development with your own design and mold, ODM modification of an existing frame model, and stock frame customization with your logo and colors. Each path has different MOQ, lead time, and cost. READSUN Optical supports all three routes for importe...

How do I find a custom eyeglass frame manufacturer? To find a custom eyeglass frame manufacturer, you need to evaluate material capability, factory size, certifications, sample process, MOQ, and communication quality. The right partner should produce acetate, TR90, titanium, and stainless steel frames, offer OEM and ODM services, and provide full quality documentation. READSUN O...

What Does OEM Mean in Eyewear Manufacturing? In eyewear manufacturing, OEM stands for Original Equipment Manufacturer. It means the factory produces eyeglass frames according to the buyer's design, specifications, or sample — not the factory's own design. The buyer owns the design, and the finished frames carry the buyer's brand. OEM is the standard model for brands that want full contro...

What Is the Difference Between OEM and ODM in Eyewear? The main difference between OEM and ODM in eyewear is who owns the design. In OEM (Original Equipment Manufacturing), the buyer provides the design, specifications, or sample, and the factory produces it. In ODM (Original Design Manufacturing), the factory provides an existing design or model, and the buyer applies their own brand, l...

Can Eyeglass Frame Colors Be Customized for Wholesale Orders? Yes, eyeglass frame colors can be customized for wholesale orders. Acetate frames support the widest range of color options — including solid, transparent, tortoiseshell, two-tone, and layered patterns. Metal frames can be customized through plating and coating colors. For B2B buyers, color customization is one of the fastest ...

What Is the Difference Between Plastic and Metal Eyeglass Frames? The main difference between plastic and metal eyeglass frames is material structure: plastic frames are molded or cut from acetate, TR90, or injected plastic, while metal frames are formed from titanium, stainless steel, or Monel. Plastic frames are lighter in feel, easier to color, and lower in cost. Metal frames are stro...

What Are the Different Types of Nose Pads on Eyeglass Frames? The two main types of nose pads on eyeglass frames are adjustable nose pads and integrated nose pads. Adjustable pads sit on metal arms and can be repositioned for a custom fit. Integrated pads are molded directly into the frame front and stay fixed. For B2B buyers, the choice affects comfort, return rate, and market fit — esp...

What Are the Different Types of Nose Pads on Eyeglass Frames? Eyeglass frames typically use two nose pad types: adjustable nose pads (metal arms, repositionable) and integrated nose pads (molded into the frame, fixed). For B2B buyers, the choice directly affects comfort, return rates, and market fit — especially for low-bridge and Asian-fit customers. Nose Pads for Glasses: The Two ...

What Are the Different Eyeglass Frame Hinge Types? The main eyeglass frame hinge types are standard hinges, spring hinges, barrel hinges, and hidden or integrated hinges. Hinges are the most common failure point on any frame, so choosing the right type affects durability, comfort, repair rate, and after-sales cost. Spring and barrel hinges usually last longer than basic standard hinges. ...

What Are the Different Eyeglass Frame Shapes? The main eyeglass frame shapes are round, square, rectangle, oval, cat-eye, aviator, browline, geometric, panto, and oversized. Each shape creates a different style and suits different face types and customer segments. For B2B buyers, shape is one of the fastest ways to build a collection because it affects style positioning, market demand, a...

What are hypoallergenic eyeglass frames? What are hypoallergenic eyeglass frames? Hypoallergenic eyeglass frames are frames designed to minimize or eliminate allergic skin reactions. They are made from materials that contain little or no nickel, or from metal frames with nickel-free plating. Common hypoallergenic options include titanium, beta titanium, acetate, Optyl, TR9...

Can you be allergic to eyeglass frames? Yes, you can be allergic to eyeglass frames, most commonly due to nickel in metal frames. Nickel is the most frequent cause of contact allergy worldwide. Other possible triggers include cobalt, chromium, and rubber or silicone in nose pads. Symptoms include redness, itching, dry skin, and small bumps where the frame touches the face. The solution is to...

What are nickel-free eyeglass frames? Nickel-free eyeglass frames are frames made from materials that contain little or no nickel, or frames that are plated with a nickel-free barrier system. They are designed for people with nickel sensitivity, a common cause of skin irritation from metal eyewear. Common nickel-free options include titanium, beta titanium, 316L stainless steel with nickel-f...

Are stainless steel eyeglass frames hypoallergenic? Yes, stainless steel eyeglass frames can be hypoallergenic, especially when made from 316L or 304 medical-grade stainless steel with nickel-free plating. Stainless steel itself contains some nickel, but the release rate is very low when the material grade and plating are correct. For sensitive-skin markets, buyers should always confirm nick...

What are the lightest eyeglass frame materials? The lightest eyeglass frame materials are beta titanium, pure titanium, and Ultem, followed by TR90 and stainless steel. Acetate is the heaviest of the common materials. Weight depends not only on the material but also on frame structure, wall thickness, and lens size. Rimless and semi-rimless designs are lighter than full rim. For B2B buyers, ...

What is cellulose acetate and what are its advantages? Cellulose acetate is a plant-based plastic made from cellulose (usually cotton linters or wood pulp) treated with acetic acid and acetic anhydride. It is the main material used in premium fashion eyewear. Its advantages include rich color depth, layered transparency, smooth polishing, and easy repair. Cellulose acetate frames feel denser...

What is optyl and are optyl frames hypoallergenic? Optyl is a thermoset epoxy resin developed specifically for premium eyewear, and yes, Optyl frames are generally considered hypoallergenic. Optyl is lightweight, dimensionally stable, and skin-friendly. Unlike acetate, it does not contain plasticizers that can leach out over time, which reduces the risk of skin irritation. Optyl frames resis...

What is ultem and what are ultem frames? Ultem is a high-performance thermoplastic also known as PEI (polyetherimide). It is used in eyewear to make ultra-thin, lightweight, and heat-resistant frames. Ultem frames can be molded into very thin profiles without losing strength, which makes them ideal for premium slim designs and minimalist collections. Unlike acetate, Ultem does not need polis...

What is monel and are monel frames hypoallergenic? Monel is a nickel-copper alloy widely used in lower-cost metal eyewear frames. It is strong, easy to weld, and holds shape well. However, monel contains a high percentage of nickel, so it is not naturally hypoallergenic. Frames made from monel can cause skin reactions in nickel-sensitive wearers unless the surface is properly plated and nick...

What is beta titanium and how is it different from titanium? Beta titanium is a titanium alloy that contains titanium plus elements such as vanadium, molybdenum, and aluminum. It is highly flexible and can return to its original shape after bending. Pure titanium is lighter and more rigid, while beta titanium offers spring-back memory that is ideal for thin frames, flexible hinges, and templ...

Titanium vs stainless steel eyeglass frames: which is better? Neither titanium nor stainless steel is universally better — the right choice depends on your price point, target market, and product positioning. Titanium is lighter, stronger, more corrosion-resistant, and hypoallergenic, making it ideal for premium and sensitive-skin markets. Stainless steel is stronger than most plastics, offe...

Acetate vs TR90: which is better for eyeglass frames? Neither acetate nor TR90 is universally better — the right choice depends on your market, price point, and product positioning. Acetate is denser, holds richer colors, and can be polished and repaired, making it ideal for fashion and premium lines. TR90 is lighter, more flexible, and impact-resistant, making it ideal for sport, kids, and ...

What is TR90? TR90 is a thermoplastic polyamide material developed by EMS in Switzerland for high-performance eyewear. It is known for being lightweight, flexible, and impact-resistant. TR90 frames can bend under pressure and return to their original shape, which makes them popular for sport, kids, and active lifestyle eyewear. For B2B buyers, TR90 offers a strong balance of durability, comf...

What is the difference between acetate and plastic frames? All acetate frames are plastic, but not all plastic frames are acetate. Acetate is a plant-based plastic cut from solid sheet, while standard plastic frames are injection-molded from petroleum-based resin. Acetate feels denser, holds richer colors, and can be polished and repaired. Injection plastic is lighter, cheaper, and faster to...