The high praise from American customers for our high-quality sun protection shirt
2026-03-09
I. Introduction: Voices from the American Market
In October 2025, we received an inquiry from Facebook. The client wanted to provide work uniforms for his employees and promote their brand. After receiving our sun protection clothing, the customer was extremely satisfied and wanted to write a positive review for us.
Today, through this real cooperation case, we will deeply analyze from four aspects - product quality, design innovation, supply capacity, and professional services - why this American client chose us, and what professional value lies behind their high praise.
II. Key Focus of Customer Reviews: Outstanding Sun Protection Performance and Comfortable Experience
Extracts of genuine customer feedback
"We conducted continuous tests on these sun-protective shirts under the scorching sun in Florida. The UV protection factor (UPF) effect of these shirts was real and stable. Our staff members wore these shirts and worked for a total of 8 hours. By the end of the work, they did not get sunburned and did not feel any discomfort."
Why is sun protection performance the most important criterion for customers?
For any American outdoor brand, sun protection performance is the "key factor" for the "entry ticket" of sun protection shirts. The US market has extremely strict requirements for the UPF standard of sun protection shirt. Mainstream retailers and consumers are all familiar with international standards such as AS/NZS 4399:2017.
For any American outdoor brand, sun protection performance is the "key factor" for the "entry ticket" of sun protection shirts. The US market has extremely strict requirements for the UPF standard of sun protection shirt. Mainstream retailers and consumers are all familiar with international standards such as AS/NZS 4399:2017.
More importantly, the US Food and Drug Administration (FDA) classifies sun-protective shirt as "over-the-counter drugs" under its regulatory framework. This means that any product claiming to have sun protection properties must have reliable test data to support it.
When our American customers are looking for suppliers, the first ones they eliminate are those factories that can only offer "vague promises". What they need are verifiable, traceable and sustainable sun protection properties.
When our American customers are looking for suppliers, the first ones they eliminate are those factories that can only offer "vague promises". What they need are verifiable, traceable and sustainable sun protection properties.
How can we ensure the highest level of sun protection?
Fabric Technology: Natural Sunscreen Fibers, Not Coated
Many low-end sun protection garments achieve their UPF value through post-treatment coatings, but this method significantly degrades after a few washes. In contrast, all of our sun protection shirts utilize native sun protection fibers - the UV absorbers are incorporated into the polymer melt during the yarn production process, making the sun protection component an integral part of the fibers themselves.
According to professional testing standards, UPF 50+ indicates that the average ultraviolet transmission rate of the fabric should not exceed 2%. In laboratory tests, our fabric maintains an UPF value above 50+ and the UVA transmission rate is less than 5%, fully meeting the requirements of AS/NZS 4399:2017.
Laboratory test: Each batch of fabric undergoes third-party testing
We collaborate with a third-party testing agency to conduct sample tests on each batch of fabrics that enter the factory. The testing items include:
Ultraviolet transmission spectrum analysis (UVA: 315-400nm, UVB: 280-315nm)
Retention rate of UPF after washing (≥ 80% after 50 washes)
Stretch deformation influence test (the UPF value decreases by ≤15% when the stretching rate is 10%)
Light aging assessment (UPF retention rate of ≥ 90% after 100 hours of UV exposure)
Fabric Technology: Natural Sunscreen Fibers, Not Coated
Many low-end sun protection garments achieve their UPF value through post-treatment coatings, but this method significantly degrades after a few washes. In contrast, all of our sun protection shirts utilize native sun protection fibers - the UV absorbers are incorporated into the polymer melt during the yarn production process, making the sun protection component an integral part of the fibers themselves.
According to professional testing standards, UPF 50+ indicates that the average ultraviolet transmission rate of the fabric should not exceed 2%. In laboratory tests, our fabric maintains an UPF value above 50+ and the UVA transmission rate is less than 5%, fully meeting the requirements of AS/NZS 4399:2017.
Laboratory test: Each batch of fabric undergoes third-party testing
We collaborate with a third-party testing agency to conduct sample tests on each batch of fabrics that enter the factory. The testing items include:
Ultraviolet transmission spectrum analysis (UVA: 315-400nm, UVB: 280-315nm)
Retention rate of UPF after washing (≥ 80% after 50 washes)
Stretch deformation influence test (the UPF value decreases by ≤15% when the stretching rate is 10%)
Light aging assessment (UPF retention rate of ≥ 90% after 100 hours of UV exposure)
These test results not only serve as the basis for our internal quality control, but also provide a strong endorsement for our customers when they are communicating with end consumers.
III. Focus of Customer Praise No. 2: Professional Design Meets Customer Needs
Customized design capability
When the clients contacted us, they only had a simple concept sketch and some reference pictures. Our design team completed the design plan within 24 hours and received the clients' approval.
When the clients contacted us, they only had a simple concept sketch and some reference pictures. Our design team completed the design plan within 24 hours and received the clients' approval.
IV. We have a stable supply capacity and a reliable supply chain.
Why supply capacity is the biggest pain point for major customers?
For American brand manufacturers, the reliability of the supply chain is often more important than the price. A simple truth: Missing a season means missing the entire year.
Sun protection clothing is a typical seasonal product. The sales peak in the US market usually lasts from March to August. If the goods are still stuck in customs in April or if quality issues are discovered and require rework in May, the entire sales season will be ruined.
More importantly, what brand owners need is predictability - they need to know that the quality of each batch of goods is consistent with the sample, and that each order can be delivered on time.
Our production capabilities support
Production capacity scale:
Our production base has over 20 specialized production lines, with a monthly output of more than 150,000 pieces. For major clients like those in Florida, we can simultaneously operate multiple production lines to ensure the timely delivery of large orders.
![The high praise from American customers for our high-quality sun protection shirt 8]()
![The high praise from American customers for our high-quality sun protection shirt 9]()
For American brand manufacturers, the reliability of the supply chain is often more important than the price. A simple truth: Missing a season means missing the entire year.
Sun protection clothing is a typical seasonal product. The sales peak in the US market usually lasts from March to August. If the goods are still stuck in customs in April or if quality issues are discovered and require rework in May, the entire sales season will be ruined.
More importantly, what brand owners need is predictability - they need to know that the quality of each batch of goods is consistent with the sample, and that each order can be delivered on time.
Our production capabilities support
Production capacity scale:
Our production base has over 20 specialized production lines, with a monthly output of more than 150,000 pieces. For major clients like those in Florida, we can simultaneously operate multiple production lines to ensure the timely delivery of large orders.
V. Professional Services and Prompt Response
Transparent reporting of the production process
During the mass production period, we send out weekly production progress reports, including photos and videos. Customers can keep track of the order status at any time without having to repeatedly ask.
During the mass production period, we send out weekly production progress reports, including photos and videos. Customers can keep track of the order status at any time without having to repeatedly ask.
Conclusion: The next positive review comes from your brand
The story of the Florida customer is just one of our many success stories. Over the past 20 years, we have established long-term partnerships with dozens of brands from markets such as the United States, Canada, Australia, and Europe.
These collaborations can continue because we have adhered to three core values:
Product quality: We do not aim for the lowest price, but for the most reliable quality. Every sun protection shirt that leaves our factory represents our commitment to our customers.
Design Innovation: We are not content with simple replication and production. Our design team continuously studies market trends and user demands, providing valuable innovative suggestions to our clients.
Service Experience: We treat every customer as a long-term partner. Regardless of the size of the order, we provide the same professional and prompt service.
The story of the Florida customer is just one of our many success stories. Over the past 20 years, we have established long-term partnerships with dozens of brands from markets such as the United States, Canada, Australia, and Europe.
These collaborations can continue because we have adhered to three core values:
Product quality: We do not aim for the lowest price, but for the most reliable quality. Every sun protection shirt that leaves our factory represents our commitment to our customers.
Design Innovation: We are not content with simple replication and production. Our design team continuously studies market trends and user demands, providing valuable innovative suggestions to our clients.
Service Experience: We treat every customer as a long-term partner. Regardless of the size of the order, we provide the same professional and prompt service.
If you are looking for a professional manufacturer of sun protection shirts, and if you wish your brand could also have a success story like that of the Florida customers, we sincerely invite you to contact us.
Let's become the star of your next positive review.
Let's become the star of your next positive review.
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Contacts: Junkay Lee
Tel/WhatsApp: +86 13902424682
Email: junkaylee@derysport.com
Address: No. 201, Workshop of Shengping Industrial Co., Dong Po Da Shan Yuan, Zhangcha
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