Haichang Optotech

20/05/2026

💡 Does your school's lighting actually meet EN 12464-1?

We've turned the key requirements into a free 5-slide visual guide — perfect for facilities managers, school business managers, and anyone specifying classroom lighting.

What's inside:
✅ EN 12464-1 requirements by classroom type
✅ UGR

15/05/2026

🏭 Still using metal halide lights in your warehouse or factory?

Here's a real number: 20 fixtures × 400W metal halide × 18 hours/day = $7,215/year in electricity. Switch to 200W UFO LED and that drops to $3,153 — a saving of $4,062 every single year, with a payback period of just 1.5–2.5 years.

We just published our complete LED high bay light guide for 2025 — covering everything from ceiling height selection to fixture count formulas, UFO vs modular comparison, and real energy savings calculations.

Whether you're managing a warehouse, manufacturing plant, gymnasium, cold storage facility, or car park, this guide gives you the exact framework to specify the right fixture.

📊 View the slide deck on SlideShare: [paste SlideShare URL here]
📖 Read the full guide: https://www.haichanglight.com/led-high-bay-light-complete-guide-2025/

💬 Tell us: what type of lighting are you currently running in your facility? Drop it in the comments — we're happy to give you a quick recommendation.

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Haichang Optotech — LED lighting manufacturer since 2008.
Free DIALux lighting layout & quotation within 24 hours.
👉 haichanglight.com/contact/

01/04/2026

💡 One light. Endless possibilities.

Meet the Haichang 5070 Linkable LED Linear Light —
designed for offices, retail stores & commercial spaces!

🔧 Easy modular installation
🎛️ DIP Switch Tri-Power control
💡 Multiple diffuser styles to match any interior
🔗 Seamless step joint — zero gaps, clean look
📐 Hang it, recess it, or mount it to the ceiling

🎬 Watch the full product demo:
👉 https://youtu.be/QDBlix5lI7k?si=esEEn5TcZqp7FBLI

📦 Browse full 5070 series (all wattages & sizes):
👉 https://www.haichanglight.com/product-category/led-commercial-lighting/led-linear-light/

🔆 Discover the ultimate modular LED lighting solution — the Haichang 5070 Linkable LED Linear Light!In this video, ...

24/03/2026

Still confused about which solar street light to buy in 2026? 🤔

Don't get left in the dark! From battery types to dealing with non-stop rainy days, we've put together the Ultimate Guide to help you make the smartest choice for your outdoor lighting.

📌 What you'll learn:
✅ The real difference between All-in-One and Split systems.
✅ Why LiFePO4 batteries are a game-changer.
✅ Pro-tips for maintaining performance in bad weather.

Read the full blog post here: [https://www.haichanglight.com/solar-led-street-light-complete-guide-2026-all-in-one-vs-split-system-lifepo4-battery-rainy-day-performance/]

Tag a friend who's working on a green project! 🌱✨

23/03/2026

🔦 Looking for the best Linear Lighting for your next project?

We’ve just published "LED Linear Light: The Complete Guide 2026".

What's inside:
📍 How to choose the right IP rating (IP20 to IP66).
📍 Dimming protocols explained: DALI vs. 0-10V vs. Tuya Wi-Fi.
📍 Mounting options: Surface, Recessed, or Pendant?

Don't settle for average lighting. Get the technical edge with Haichang Optotech.

👉 Get the full story: [https://www.haichanglight.com/led-linear-light-the-complete-guide-2026/]

22/03/2026

Still running metal halide fixtures in your warehouse?

A 400W metal halide system draws ~458W (lamp + ballast losses) and needs relamping every 12,000–20,000 hours. A 200W LED high bay at 190 lm/W delivers the same light output — with 50,000h L70 lifespan and no ballast.

20 fixtures. 18h/day. The energy saving alone is over $4,000/year.

We put together a complete selection guide covering:
→ UFO vs modular LED high bay — which fits your facility
→ Lux calculation formula by ceiling height
→ IP65 vs IP68 — when you need which
→ Full ROI breakdown vs metal halide

Complete guide to LED high bay lights 2025 — UFO vs modular types compared, lux calculation by ceiling height, IP65 vs IP68, and energy savings vs metal halide with real numbers.

23/01/2026

Dusk till Dawn CCT Power Adjustable Infrared Ledvance Best IP66 IK10 LED Backyard Parking

Upgrade your outdoor lighting with the 300w led flood light! Waterproof and shock-resistant, it is perfect for security and brightness. Discover it today!

23/01/2026

Dusk till Dawn CCT Power Adjustable Infrared Ledvance Best IP66 IK10 LED

Transform your outdoor space with the 500w led flood light. This energy-efficient option offers long-lasting performance for any security need.

23/01/2026

Dusk till Dawn CCT Power Adjustable Infrared Ledvance Best IP66 IK10 LED

Upgrade your lighting with the superior 600w led flood light. Long-lasting and motion-sensor equipped, it offers safety and efficiency. Shop now!