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FAQ FAQ

Custom Products

Where will the tooling be produced? Is it outsourced?


All items and custom tools are manufactured at our facility in China.


What sizes of optics can Yuying manufacture?


The pitch is as small as 0.02mm.
The Fresnel lenses size could be large as Dia 2.2m (If assembly is acceptable, theoretically we can make it up to 10 meters in diameter.)



Can Yuying produce custom optics?



Easily – just ask us!
sakura@yuyingfresnel.com and sakura@yuying-sd.com.

Whatsapp: +86 13826507576






How do I get design help for my project?


Please email your inquiry to our technical staff at sakura@yuyingfresnel.com and copy to: sakura@yuying-sd.com.








Is there a fee for design help?

If you purchase tooling and the resulting product from us, there is no charge for the design.








How do I request a quote for a custom item?


Please direct your inquiry to our technical staff at sakura@yuyingfresnel.com and copy to: sakura@yuying-sd.com.









Can I order a custom size for a stock item?


Of course! We offer custom cut sizes for most of our products at a small additional cost. Please send a drawing or a brief description of the size you require to our sales team at sakura@yuyingfresnel.com.










What information should I provide to request design of a custom PIR array?


Please forward the following information to our technical staff at  sakura@yuyingfresnel.com and copy to :sakura@yuying-sd.com.

You could download the file(pir key design elements) and then fill in it with your requirments.











What about costs for tooling maintenance and storage?

As long as you are actively ordering product from the tooling, there is no charge for these services.

What are Yuying’s tooling capabilities?
We have a full, in-house shop used to produce tooling and molds for all optics manufactured at Yuying.

General Information

How do I request help finding the right product for my application?


Our sales team is happy to help find the right product or put you in touch with our engineering team to work on bringing your custom optical component to fruition. Please send your inquiryto sakura@yuyingfresnel.com and copy to :sakura@yuying-sd.com. 


Where can I find your catalog?

Yuying offers several catalogs, each of which describe our extensive product lines. Most can be found by navigating through the Products List and selecting the corresponding category. Just click on the links listed to download the catalog of your choice. Catalogs are also available on the About us page.


What are Yuying’s specialties?

We’re best known for Passive Infrared (PIR) lens arrays ,PMMA Fresnel lens,PC Fresnel lens ,PVC Fresnel lens,SOG Fresnel lens and various magnifiers for promotional gifts.but we can design and manufacture any type of polymer optics, both molded and directly machined. 

Orders and Quotes

How do I place an order?

Our sales team will be happy to process your order. They can be reached via email at  sakura@yuyingfresnel.com or phone at +86 15166907006.

What payment methods can I use when ordering?


Our most common payment methods are TT.If you like to pay online via your visa card ,please place an order on https://shandongyuying.en.alibaba.com/


How do I set up credit terms with Fresnel Technologies?


Please provide NDA to our sales team before order.



Does Yuying offer a warranty on products?


We offer a typical 90-day commercial warranty on our goods. We will cheerfully replace defective goods or refund your purchase price as appropriate.



How do I request a quote?

Please contact our sales team to request a quote. They can be reached via email at sakura@yuyingfresnel.com or phone at +86 15166907006.