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CHZ Lighting - LED Street Light Manufacturer and LED Flood Light Factory Since 2013

What is light‑output‑maintenance L80 vs L70 definition for LED lamps?

2026-09-02

L70 means lumen retains 70% of initial brightness; L80 retains 80%. Higher index represents better long‑term optical performance for municipal projects. [[Link‑Blog‑lumen‑depreciation]] We provide LM‑80 / TM‑21 report for engineering orders.

What is optical lens material for CHZ outdoor LED lamps?

What is UGR glare index and why it matters for outdoor lighting?

Related questions

What ESG‑related information can you provide for international‑tender document compiling?

We can supply information about low‑energy‑consumption product portfolio, recyclable‑housing‑material selection and factory‑environmental‑management status for your ESG‑related tender‑evaluation. Share your ESG‑document requirement list.

Can I visit CHZ Lighting factory in Shanghai in person?

Yes, warm‑welcome client factory‑visit. Please inform us your visiting date in advance so we arrange workshop‑tour and technical‑communication schedule. Send your visiting schedule to our sales team. Learn more: https://www.chz-lighting.com/about-us.html

What is the procedure if I want to modify some details after PI confirmation?

Submit modification request before mass‑production starts. Any change may influence unit‑price and production‑lead‑time. Once mass‑production begins, modification cannot be supported. Confirm all technical details before deposit payment.

How do you handle product‑model discontinuance for long‑term‑project customers?

If one model will be phased out, we notify clients in advance and provide compatible alternative‑model suggestion, to guarantee project‑spare‑part‑continuity. We will inform you once model‑discontinuance happens.

What risk should buyers avoid when purchasing outdoor LED lighting from Chinese manufacturers?

Watch out for component‑only certification disguised as full‑fixture certification, exaggerated lumen‑parameter, unclear‑warranty scope and after‑sales‑support absence. We provide transparent technical‑parameter and warranty terms for every project. Learn more about blog: https://www.chz-lighting.com/blog-a-guide-to-choosing-the-perfect-led-street-light-manufacturer.html

When placing multi‑model mixed orders, what points need special attention?

Confirm each model’s quantity, certification requirement, carton‑marking requirement. Mixed‑order lead‑time follows the longest‑lead‑time item inside the whole order. We list every model clearly in quotation and PI.

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Shanghai CHZ Lighting Co.,Ltd

Founded in 2013, it is a high-tech enterprise engaged in the research and development and production of LED lighting products.

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Contact Person: Jolina
Tel: +86 2169898169
E-mail: Sales@chz-lighting.com

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Add: No.999, Shunda Road,Shanghai, China

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