Quality Control Service of Sunglasses and Eyewears from China (2023 Updated)

Sunglasses and Eyewears Quality Control Introduction

Customers are increasingly looking for high-quality eyewear with fashionable yet timeless designs. Brands and manufacturers must respond to these expectations while adhering to international regulations.

It is where quality inspection service comes into control. We help eyewear companies to secure the quality of sunglasses or eyewears from China. We are committed to exceeding expectations in the delivery of our high-quality solutions.

In this article, you will examine how we conduct our inspection service for sunglasses and eyewears from China. Let’s get started.

Different Types of Sunglasses and Eyewear from China

Sunglasses/Optical resin glasses/Reading glasses/eyewears product inspection services performed by Asia Quality Inspection-AQI Service Company

There are different types of sunglasses and eyewears you can import them from eyewear manufacturers in China or sunglasses manufacturer in China. We classified the examples of sunglasses and eyewears from China below.

Sunglasses:

  • Kid’s Sunglasses
  • Promotion sunglasses
  • Metal Sunglasses
  • Plastic sunglasses
  • Clip-on and Flip-up polarized sunglasses
  • Wooden Bamboo Sunglasses
  • Novelty Party Sunglasses
  • Rectangle Sunglasses
  • Wayfarer sunglasses
  • Aviator Metal Sunglasses
  • Cat Eye Sunglasses
  • Round Sunglasses
  • Aviator glasses
  • Police glasses
  • Driving sunglasses

Eyewears

  • Bifocal reading glasses
  • One Injection of reading glasses
  • Folding reading glasses
  • Metal reading glasses
  • Plastic reading glasses
  • LED light reading glasses
  • Eyewear Optical Frame Memory Optical Frame
  • Titanium Optical Frame
  • Stainless Steel Optical Frame
  • Safety glasses
  • Acetate Optical Frames
  • Ultem Optical Frame

Quality and Performance Standards of Sunglasses and Eyewears from China

PVS Sunglasses/eyewears product inspection services

Each different type of eyewears from China has its compliance standard. Our inspections are based on the standard of each kind of eyewears. Below, we list the compliance standard of common eyewears from China.

Sunglasses Compliance Standard

  • ISO 12312-1
  • EN ISO 12312-1
  • BS EN ISO 12312‐1
  • GB 39552
  • ANSI Z80.3, AS/NZS1067.1
  • GB10810
    Etc.

Optical Frames Compliance Standard

  • ISO 12870
  • EN ISO 12870
  • BS EN ISO 12870
  • ANSI ISO 12870
  • AS/NZS ISO 12870
  • GB/T 14214
  • JIS B 7285

Reading Glasses Compliance Standard

  • ISO 16034
  • EN 14139
  • BS EN 14139
  • ANSI Z80.31
  • GB 13511

Children’s Glasses Compliance Standard

  • ISO 8124-1, 2, 3
  • EN 71-1, 2, 3
  • ASTM F963
  • CPSIA FDA 16 CFR 1303
  • AS / NZS ISO 8124-1, 2, 3
  • GB6675
  • JIS ST2012

General Tests of Sunglasses and Eyewears from China

eyewears from China and eyewears full inspection in factory 1You gain a competitive advantage in the international market with high-quality inspection services. As a result, your items are profitable for both export and domestic sales.

Here, we will list some of China’s inspection procedures for sunglasses and eyewears from China.

A. Methods for Material Inspection

a. Plastic Resin and Additives

Confirm that the manufacturer uses the proper resins and additives to produce plastic lenses. These materials must have the correct specific gravity, refractive index, Abbe value, etc.

b. Glass

This test ensures that the appropriate raw materials and additives are used to manufacture spectacle glass lenses.

c. Coating

Inspectors verify if the approved coating and finishing materials are used. It offers or improves several desirable attributes, for instance:

  • – hardness
  • – color
  • – anti-reflectance
  • – water resistance
  • – abrasion resistance
  • – static resistance
  • – UV protection.

d. Frames

Inspectors ensure that required materials are used to fabricate spectacle frames. These materials include carbon fiber, plastic, rubber, and light metal alloys.

B. Methods for Lens Inspection

a. Visible Transmittance

We check the visible light transmittance of reading glasses with the visible light transmission meter. It detects a material’s sensitivity to one or more types of light.

b. Impact Resistance Test

Also known as the “Drop Ball Test,” it involves dropping a 5/8 inch steel ball weighing no less than 16 grams from a height of 50 inches.

c. Abbe Value Test

Find the Abbe value using proper lab procedures to assess the lens’s dispersion rating. A higher Abbe value indicates less dispersion and improved visual quality for consumers.

d. Density Check

Inspectors measure the specific gravity of finished and semi-finished lenses for compliance. They then compare them to certified samples or contractual specifications. It assists in exposing potential difficulties linked with issues. It includes material quality and suitable production processes and protocols.

e. Abrasion Resistance Check

Inspectors assess the product’s resistance to abrasion using test methodologies appropriate for the materials and coating employed. A standard test is to touch the lens vigorously with a clean cotton towel by hand to look for scratches or color transfer.

f. UV Protection Check

Inspector uses a UV meter to determine the level of UV protection your sunglasses provide. Product labeling should also communicate the UV protection level.

g. Reflective Index Check

Examine the lens’s anti-glare property to ensure bright light does not harm users.

C. Methods for Frames Inspection

eyewears full inspection in Chinaa. Tolerance for Dimensions

Inspector will check if the dimensions of the eyewears comply with the standard and regulations. They will record the result in the QC report.

b. Frame Color

Inspector compares the color to approved samples or defined values in the Pantone color chart.

c. Stability of Dimensions at High Temperatures

Inspector will place the eyewears in a high-temperature atmosphere. The glasses will then be taken out and checked if there are any changes in the glasses’ dimensions.

d. Endurance Test

The durability of the hinges is checked with this test. Inspector will clamp the eyewears on a device during the trial. The hinges are then stressed from a variety of angles. The hinges should not be “worn out” or overstretched after 500 cycles and should still be completely functional.

e. Deformation Test

This test determines whether the sunglasses or eyewears from China meet the standards for strength. The glasses are stretched out, and pressure is applied to the lenses using a retention mechanism. The frames should not have varied from their original form by more than 2% after the test.

f. Nickel Release

Nickel-releasing portions are immersed in an artificial sweat test solution for one week in this test. Our inspector uses an appropriate analytical approach to determine the concentration of dissolved nickel in the solution.

D. Methods for Assembled Eyewear Inspection

a. Lens Tightness of Fit

This test ensures the lenses are correctly placed into the frame, so they do not fall off during everyday use. High-end sunglasses and industrial eyewear should conduct this test.

b. Check for Aesthetic Defects

In this test, inspectors examine eyeglasses for signs of manufacturing faults and handling damage. It includes scratches, chips, coating pits, drips, and blemishes.

c. Inspect for Drilled Lenses

It is to ensure that the drilled lenses are securely fastened. Also, it checks for no cracks, chips, or abnormalities in the drill holes.

d. Labeling Check

Inspectors make sure that the labels used in the goods meet relevant standards. Also, the labels must follow the importer’s specifications, such as brand name, model, UV rating, etc.

e. Packaging Check

Inspectors ensure that packaging adheres to existing rules and contractual specifications.

f. Flammability Test

Inspector will verify if the eyewear is composed of non-combustible materials.

g. Biocompatibility

Inspectors guarantee that the product is made of non-toxic, non-irritating components. They ensure the products do not cause major allergic reactions in the wearer under normal conditions.

Sunglasses and Eyewears Inspection Stage

eyewears from China and eyewears full inspection in factoryThere are a few inspection stages of sunglasses and eyewears. It includes first-article inspection, in-process inspection, pre-shipment inspection, and container loading supervision.

First-Article Inspections (FAI)

The process of planning, manufacturing, and evaluating a production process is known as first article inspection (FAI). The goods are selected randomly and will serve as a sample for the remainder of the production run. If the inspected parts are manufactured to the exact client specifications, all other details are also expected to be correct.

This inspection takes place before mass production. Eyewear attributes are measured and compared to specifications to ensure quality matches.

In-Process Inspections (IPI)

In-Process Inspections are product inspections that take place throughout the production process. This control is performed in stages and at predefined periods.

The inspection typically occurs when at least 20% of the products have been completed. This inspection step ensures that the manufacturing processes and techniques are followed.

Pre-Shipment Inspections (PSI)

A Pre-Shipment Inspection (PSI) is a qualifying examination before your products are sent. When at least 80% of the order is packaged, the quality inspectors at AQI Service will choose random samples of finished products to check (Based on AQL standard) that the products are fully compliant with your specifications.

Before delivery, the inspectors inspect the glasses for conformance to standards. Workmanship, functioning, packaging, labeling, and other factors are evaluated by inspectors as needed.

Container Loading Supervision (CLS)

Container loading supervision ensures that your finished items are loaded into containers accurately. This service is typically performed at the production location(s) or a third-party warehouse following a final product inspection.

Inspectors ensure that suitable methods are used during product loading and that counts are checked on-site.

Final Words

Professionals must grasp the significance of quality testing eyewear before it is released to the public. You must be familiar with best-in-class eyewear quality control systems, testing, and best practices. It is especially when you are purchasing eyeglasses from a source or producing your own,

The standards regulating eyeglasses, the materials, and the procedures utilized in manufacture are constantly evolving. So, buyers should be able to adapt to these changes as well.

Do not hesitate to contact us whenever you need an inspection service! Also, feel free to ask us if you have any queries. Our friendly customer support team will get back to you instantly!

Author: AQI Service as a professional quality control service company in China specialized in providing a complete range of quality inspection and testing and certification services in China & Asia for global importers, buyers, retailers, and sellers.



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