Zhejiang Zhansheng Glasses Co., Ltd. was established in Duqiao, Linhai, Taizhou in 2004. After more than two decades of development, it has adhered to the development philosophy of "quality as the foundation and innovation as the core", establishing an industry benchmark in the production of glasses.
The company has a 12,000-square-meter site and gathers 300 employees, achieving an annual production capacity of over 4 million pairs. Particularly, it has core competitiveness in the manufacturing of metal and TR90, sheet sunglasses, and anti-blue light glasses. The enterprise is equipped with a top-notch R&D team, completing hundreds of original product design iterations annually. It provides one-on-one customized services for its clients. Meanwhile, the factory warehouse reserves millions of ready-made inventory, enabling it to quickly seize market opportunities for customers.
As a professional Sunglasses manufacturer and OEM/ODM Blue Light Blocking Glasses factory in China, The birth of each pair of glasses begins with carefully selected raw materials. In the workshop, every process is infused with dedication - during polishing, a fine touch is pursued, and during assembly, strict fit is required. Multiple processes are strictly controlled, not neglecting any detail, only to incorporate quality into the curvature and make comfort a part of the wearing experience, creating a good, warm pair of glasses.
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Read MoreThe primary function of high-quality sunglasses is to block ultraviolet (UV) rays. When choosing sunglasses, check if the lenses are clearly labeled UV400 or block 99–100% of UVA/UVB rays.
The darkness of the lens tint does not directly determine the level of protection: dark lenses without a UV coating offer no protection, while light-colored lenses with a UV coating are equally safe.
Another key point is lens coverage and fit—larger lenses or curved lenses reduce UV rays entering from the sides or top of the frame. For highly reflective environments such as beaches, mountains, and driving, prioritize polarized lenses to reduce horizontal glare, thereby reducing indirect sunlight exposure around the eyes (helping to reduce the risk of sunburn).
The frame material and nose pad design should ensure a secure fit, avoiding unnecessary adjustments that cause additional exposure.
Don't just look at the appearance when judging quality. Check the following points:
1. Protective markings (UV400, CE, or relevant industry marks);
2. Lens uniformity: A professional testing method is to point the lens at a distant straight object (such as a door frame or power line) and slowly rotate the lens. If the image is distorted or shifts significantly, it indicates a large optical deviation;
3. Workmanship and seams: Observe whether the welds, hinges, screws, and inner lining are tight and free of burrs;
4. Lens coating test: Gently touch the lens with your fingernail to see if it feels easy to peel off (the abrasion-resistant layer should be firm);
5. Wearing comfort: Imprints from the temples pressing against the ear or bridge of the nose indicate poor design;
6. Accompanying certificates and after-sales service: Reputable brands usually provide test reports and after-sales policies.
Among common frame materials, titanium alloy (especially β-titanium/titanium) and TR90 (high-elasticity nylon polymer) are the two lightest.
Titanium alloys combine lightweight strength, corrosion resistance, and hypoallergenic properties; TR90 is known for its ultralightness, outstanding flexibility, and impact resistance, and is easy to stain and inexpensive, making it suitable for sports and children's wear.
If we define lightest in terms of lens material, PC (polycarbonate) lenses are lighter and more impact-resistant than glass, but their optical clarity is inferior to high-refractive-index resin lenses.
For ultimate lightweight durability, choose a TR90 frame with PC or high-refractive-index resin lenses; for a high-end, lower-allergy-risk, and still lightweight option, choose a titanium alloy frame with thin, high-refractive-index lenses.
Different lifestyles require different sunglasses; choosing according to the scenario improves comfort and protection:
Combining fine craftsmanship with automation technology, we create glasses that are competitive in the market.
No. 7-1, Dengtou Industrial Zone, Duqiao Town, Linhai City, Taizhou City, Zhejiang Province
+86-13666884088
+86-573-85505158
+86-573-85505155
[email protected]
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