Knowledge
What Jiayu writes about eyewear
Between June and August 2025 Jiayu published twelve knowledge articles, mostly buying guides for sport, fishing and golf sunglasses and one on safety-glasses standards. Each is summarised here in our words with one sentence of theirs and a link to the original. Two titles on the list have no page of their own; they are noted as such.
- 2025-08-05jiayu-optical.com
How to choose the right golf sunglasses?
A six-step buying guide: lens technology first (polarization, UV400, tint), then lens material (polycarbonate over glass), frame comfort (TR90, titanium, nylon, silicone nose pads), ventilation and scratch resistance, tint matched to playing conditions, and comfort over a long round.
Avoid Overly Dark Tints: Dark lenses can dull colors, making it harder to distinguish grass shades or ball details.
- 2025-07-30jiayu-optical.com
How to choose a pair of suitable fishing sunglasses?
Six points for anglers: polarization, tint by water and light (grey, amber and copper, yellow, blue and green), UV400, durable lenses and corrosion-resistant frames, a wraparound fit under 30 g, and extras such as interchangeable or photochromic lenses and vents.
Polarization is non-negotiable for fishing.
- 2025-07-28jiayu-optical.com
Do golf sunglasses come in different colors and styles?
What grey, brown, green, yellow and rose lenses each do on the course, then frame colours and shapes.
Brown lenses can enhance depth perception and contrast.
- 2025-07-25jiayu-optical.com
Golf Sunglasses: A Guide to Features and Benefits
UV protection and glare reduction with polarized lenses as standard, contrast tints, interchangeable or photochromic lenses, polycarbonate lenses with anti-scratch and anti-fog coatings, TR90, titanium or nylon frames with silicone grips.
Jiayu Polarized lenses are standard, eliminating glare from water hazards, sand traps, and wet grass.
- 2025-07-21jiayu-optical.com
Here are some materials of sports sunglasses suitable for running
A material primer: PC, TAC and nylon lenses with their pros and cons; TR90 frames (heat resistance to 350 degrees, impact resistance more than twice that of cellulose acetate, memory function) and nylon or carbon-fibre frames. The clearest statement of the materials the factory works with.
Its impact resistance is more than twice that of cellulose acetate plastic (CA).
- 2025-07-16jiayu-optical.com
How Cycling Sunglasses Aid Vision During Cycling?
Four benefits: glare and eye-strain reduction, visibility across light conditions with photochromic or amber lenses, debris protection from wrap-around frames, long-term UV protection.
The wrap-around design of cycling sunglasses creates a barrier, keeping these irritants out.
- 2025-07-14jiayu-optical.com
Core Functions of Sports Sunglasses
Three function groups: protection (UV400, impact resistance to ANSI Z87.1 or EN 166, wind barrier), visual enhancement (polarized, tint, photochromic), comfort and stability (TR90, nylon or carbon fibre, anti-slip grips, aerodynamic shape).
Made from shatterproof materials like polycarbonate (PC) or Trivex, meeting standards like ANSI Z87.1 (USA) or EN 166 (EU).
- 2025-07-01jiayu-optical.com
How to choose the right cycling sunglasses?
The longest guide: riding scenario (road, mountain, commuting), UV400 and impact resistance with a home test, a lens colour and VLT table by scenario, fit checks (anti-slip, helmet gap, ventilation) and add-ons such as prescription inserts and quick-change lenses.
Aerodynamic frames: Streamlined designs to minimize wind resistance.
- 2025-06-27jiayu-optical.com
Essential equipment for cycling: cycling sunglasses
Key functions (UV, anti-glare, debris, aerodynamics, impact) and construction (TR90, carbon or nylon frames; PC, glass, polarized or photochromic lenses; silicone nose pads; grippy temple tips).
Shape: 3D wrap-around design for full coverage, blocking side glare and wind.
- 2025-06-26jiayu-optical.com
Are there any international standards for safety glasses?
Describes ANSI Z87.1 including the 2020 update, the EN 166 marking scheme and AS/NZS 1337.1 impact levels (13, 45, 120 and 190 m/s), illustrated with the factory's own safety glasses.
The impact levels are low (13m/s), medium (45m/s), high (120m/s), and ultra-high (190m/s).
- 2025-06-25jiayu-optical.com
What are the precautions when wearing safety glasses?
Listed with a teaser (preparation, correct use, maintenance, special scenarios); its link resolves to the standards article above, so there is no separate page to summarise.
- 2025-06-19jiayu-optical.com
How to choose suitable safety glasses?
Listed with a teaser only (safety glasses differ from regular eyewear by meeting ANSI Z87.1 or EN 166); no detail page exists.
FAQ
The answers Jiayu publishes
Combined from the FAQ pages of both sites and the FAQ block repeated on product pages.
EN ISO 12312-1:2013 (A1:2015), AS/NZS 1067.1:2016, ANSI Z80.3:2018, and FDA. Strict QC is done during the production process.
Source: jiayu-optical.com/faq
600 pieces per model, 300 pieces per colour.
Source: jiayu-optical.com/faq
For OEM orders, around 40 to 60 days after receiving the deposit. Ready goods with a custom logo take 7 to 15 days; custom orders 30 to 60 days in normal conditions.
Source: both FAQs
Yes: laser, printing or metal logo, or a thin metal sticker. The sister site lists silk print, hot stamp and metal logo on the temples, and laser on the lenses.
Source: both FAQs
Yes. Contact Jiayu for a quotation.
Source: jiayu-optical.com/faq
Jiayu says it can support custom styles, materials and colours, and will produce a digital wireframe from a sketch before sampling.
Source: jiayusunglasses.com/faq and About
Express 4 to 7 working days, air 10 to 15 days, sea 25 to 45 days.
Source: jiayusunglasses.com/faq
One year from the shipping date for all glasses frames.
Source: jiayu-optical.com/faq
Company news
Dated posts
The fair posts with a date and a booth number. Self-published ranking articles are not repeated here.
- 2024-10-14company news
Oct 2024 Global Sources Sports & Outdoor Show, invitation
27 to 30 October 2024, AsiaWorld-Expo, Hong Kong, booth 5K15: ski goggles, cycling, sports and fashion sunglasses, safety glasses.
- 2024-05-16company news
2024 Global Sources Sports & Outdoor Show, report
27 to 30 April 2024, AsiaWorld-Expo: cycling, running and fishing sunglasses, ski goggles and floating sunglasses shown. Jiayu writes that it was the only exhibitor with ski goggles.
- 2023-07-26company news
Apr 2024 Global Sources Sports & Outdoor Show, invitation
Booth 5H06, AsiaWorld-Expo, 27 to 30 April 2024.
- 2022-12-16company news
Hong Kong Optical Fair
HKTDC Hong Kong Optical Fair, booth 1C-B11: TR90 fashion styles, sports sunglasses, kids sunglasses, the fit-over series and the floating series.
- 2022-11-14company news
2022 Xiamen International Optical Fair
The first China Xiamen International Optical Industry Exhibition, 24 to 26 November 2022, noted by Jiayu.
Two product films
Floating and side shields
Two of the eleven product films on the case pages, for the two conditions where Jiayu's catalogue is least ordinary.

