--- title: Precision Eyewear Laboratory | Eyewear Testing And Inspection Blog | David Li description: Mr. David Li, Manager, with over 16 years of experience in eyewear testing industry. Technical accessor of China National Accreditation Service. Trainer on Eyewear International Standards to Eyewear manufacturers. --- [![Precision Eyewear Lab](https://www.pel-eyewear.com/hs-fs/hubfs/img/pel_logo.png?width=271&height=247&name=pel_logo.png "Precision Eyewear Lab")](https://www.pel-eyewear.com) - [English](https://www.pel-eyewear.com) - [中文](https://www.pel-eyewear.com/cn/) - [Services](https://www.pel-eyewear.com/eyewear-supply-chain-compliance-solutions/) - [Eyewear Testing Services](https://www.pel-eyewear.com/eyewear-lab-testing) - [Sunglasses Testing](https://www.pel-eyewear.com/eyewear-supply-chain-compliance-solutions/eyewear-testing-product-types/sunglasses-testing) - [Optical Frame Testing](https://www.pel-eyewear.com/eyewear-supply-chain-compliance-solutions/eyewear-testing-product-types/optical-frame-testing) - [Reading Glasses Testing](https://www.pel-eyewear.com/eyewear-supply-chain-compliance-solutions/eyewear-testing-product-types/reading-glasses-testing) - [Ophthalmic Lenses Testing](https://www.pel-eyewear.com/eyewear-supply-chain-compliance-solutions/eyewear-testing-product-types/ophthalmic-lenses-testing) - 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[Contact](https://www.pel-eyewear.com/contact-us) ## Eyewear Testing and Inspection Blog # David Li - [Home](https://www.pel-eyewear.com) - [Eyewear Testing and Inspection Blog](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog) - David Li ## David Li Mr. David Li, Manager, with over 16 years of experience in eyewear testing industry. Technical accessor of China National Accreditation Service. Trainer on Eyewear International Standards to Eyewear manufacturers. ### Recent Posts ## [How the Eyewear Industry Will Benefit From 3D Printed Glasses (2020)](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/how-the-eyewear-industry-will-benefit-from-3d-printed-glasses) Posted by [David Li](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/author/david-li) on 24 March 2020 3D Printed glasses are revolutionising how eyeglasses are manufactured and designed. A large number of eyewear manufacturers have adopted this layer-by-layer technique, primarily to differentiate .... [Read More](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/how-the-eyewear-industry-will-benefit-from-3d-printed-glasses) ## [How To Clean Glasses - Prevent COVID-19 Without Damaging Eyewear](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/how-to-clean-glasses-prevent-covid-19-without-damaging-eyewear) Posted by [David Li](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/author/david-li) on 19 March 2020 Optical stores worldwide are going through uncertain times at the moment. Many of our customers have asked us how to clean glasses and frames to both disinfect and not cause damage in the process. In .... [Read More](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/how-to-clean-glasses-prevent-covid-19-without-damaging-eyewear) ![](https://www.pel-eyewear.com/hubfs/img/LP/landing-sidebar-image.png) ### Get the latest updates on Eyewear Testing and Inspection ## [How to Prevent Eyewear Shipments from Carrying COVID-19 Infection](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/how-to-prevent-eyewear-shipments-from-carrying-covid-19-infection) Posted by [David Li](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/author/david-li) on 5 March 2020 How long does the COVID-19 virus remain active outside a host (human body)? A lot of eyewear companies are concerned about their shipments and whether they will be safe from the COVID-19 virus once .... [Read More](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/how-to-prevent-eyewear-shipments-from-carrying-covid-19-infection) ## [The Building Blocks Of an Eyewear Supply Chain Designed for China](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/the-building-blocks-of-an-eyewear-supply-chain-designed-for-china) Posted by [David Li](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/author/david-li) on 27 March 2019 The eyewear supply chain in China is a bit of an enigma and greatly misunderstood. More often than not we don’t consider the intricate networks involved to manufacture eyewear. You need to understand .... [Read More](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/the-building-blocks-of-an-eyewear-supply-chain-designed-for-china) Topics: [Eyewear Supply Chain Design](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/topic/eyewear-supply-chain-design) ## [Your Complete Guide to MIDO (+ Detailed Milan Travel Guide)](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/complete-guide-to-mido-2019) Posted by [David Li](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/author/david-li) on 21 January 2019 Mido 2018 was a record-breaking event with the highest number of eyewear professionals ever attending a show of it’s kind, 49,000! This year’s show is looking to break that record again with an .... [Read More](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/complete-guide-to-mido-2019) ## [Quality Eyewear "Made in China" Not a Myth - Eyewear Insight ](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/quality-eyewear-produced-in-china-not-a-myth-eyewear-insight) Posted by [David Li](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/author/david-li) on 16 March 2018 Eyewear, like everything manufactured in China, has a bad “Made in China” stigma attached to it. There are thousands of people online that are quick to knock China for “bad quality” and “cheaply .... [Read More](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/quality-eyewear-produced-in-china-not-a-myth-eyewear-insight) Topics: [Eyewear insight](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/topic/eyewear-insight) ## [3 PPE Eyewear Tests You Should Know - EN 166](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/3-ppe-eyewear-tests-you-should-know-en166) Posted by [David Li](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/author/david-li) on 27 February 2018 Protective eyewear sold throughout the world must comply with specific standards, in this blog we’ll be looking at the EN 166:2001 standard. What are the processes and requirements of EN 166:2001 and .... [Read More](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/3-ppe-eyewear-tests-you-should-know-en166) ## [This is How You Can Avoid Lousy Eyewear Manufacturing (2019)](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/dodge-a-bullet-avoid-lousy-eyewear) Posted by [David Li](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/author/david-li) on 24 January 2018 Competition in the eyewear trade is fierce. Nobody can survive with substandard products. Take a look at the facts, and what steps you can take to ensure your clients receive top-quality eyewear. [Read More](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/dodge-a-bullet-avoid-lousy-eyewear) Topics: [Eyewear Manufacturing](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/topic/eyewear-manufacturing) - [1](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog) - [2](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/author/david-li/page/2) [Next](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog/author/david-li/page/2) [![pel_logo_bw.png](https://www.pel-eyewear.com/hs-fs/hubfs/img/pel_logo_bw.png?width=271&height=247&name=pel_logo_bw.png "pel_logo_bw.png")](https://www.pel-eyewear.com) - [Services](https://www.pel-eyewear.com/eyewear-supply-chain-compliance-solutions/) - [About Us](https://www.pel-eyewear.com/about-us) - [FAQ](https://www.pel-eyewear.com/faq) - [Blog](https://www.pel-eyewear.com/eyewear-testing-and-inspection-blog) - [Contact Us](https://www.pel-eyewear.com/contact-us) - [Privacy Policy](https://www.pel-eyewear.com/privacy-policy) - [Disclaimer](https://www.pel-eyewear.com/disclaimer) Unit 401, Block A and Unit 401, Block B, 68 Xiaokang Road, Dakang Community, Yuanshan Street, Longgang District, Shenzhen, P.c. 518115 **Phone: +86 0755 84264042** ![Factory-Logos-2](https://www.pel-eyewear.com/hs-fs/hubfs/Factory-Logos-2.png?width=1500&name=Factory-Logos-2.png "Factory-Logos-2") - - Learn more about our Services, Business scope and   [![Get a Free Quotation](https://no-cache.hubspot.com/cta/default/2723474/94acfbdc-4a59-447a-a6bc-60c36d4e8c34.png)](https://cta-redirect.hubspot.com/cta/redirect/2723474/94acfbdc-4a59-447a-a6bc-60c36d4e8c34) Copyright © 2026 PEL China. 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