US Representative Office

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LED Displays — Repair, Install & Custom Projects · Diamond Bar, CA

The manufacturer’s own local team. Factory-priced products, face-to-face service, and someone you can trust on the ground. Not a distributor.

What We Do

On-site LED display installation and diagnosis at a commercial venue

Diagnosis & On-Site Visit

Send a photo or book a visit. We tell you what’s wrong — and whether repair beats replacement.

LED module wiring and spare parts repair at factory QC

Spare Parts & Repair

Modules, power supplies, receiving cards — sourced at factory pricing, usually far cheaper than replacing the whole wall.

Large-format indoor LED video wall installation

New LED Displays

Storefront signs to large-format walls. Standard packages or built to your spec — factory product, quoted locally.

Custom curved and circular LED display installation

Custom & Large Projects

Curved walls, special shapes, engineered installs. Our field engineer has led major US venue projects — tell us what you need.

Who You’ll Talk To

Field Service Engineer
Lee Zhu

10+ years installing and repairing LED screens across the US. On-site diagnosis by appointment.

Sales & Support · Español
Yini Luo

Native Spanish speaker. Sales and client support for shops, restaurants, and churches — in your language.

California Field Work

Our field engineer has led installs, calibrations, and repairs at venues across the US — including Southern California. A few examples:

Large LED wall calibration at a Hollywood theme park attraction
Calibration · Los Angeles area

Theme Park Interactive LED Wall

Large indoor wall with partial obstruction — partitioned calibration and camera tuning for uniform output.

Curved LED screen installation at a synagogue in Encino, California
Install · San Fernando Valley

House of Worship — Curved LED Screens

Dual curved walls with tight seam control and on-site calibration sequencing.

Ribbon LED display repair at an arena in Oceanside, California
Repair · San Diego County

Sports Arena — Ribbon Display Repair

Network mapping failure and dead zones — diagnosed, reconfigured, and restored on site.

View all US field projects (10+) →

Quick Facts

Factory pricing

Products come direct from the manufacturer — factory price, no distributor markup.

Local face, real trust

Meet your engineer in person. Diagnosis, install support, and aftercare — in English or Español.

By appointment

We reply within 8 business hours. Same phone and email for both reps.

How It Works

1
Call or Email

626-353-0076 or us@doitvision.com — describe the issue or send a photo.

2
Diagnose & Quote

Meet locally or remotely. Factory pricing quoted for your project — no hidden layers.

3
Order & Deliver

Confirm your order and payment option. Factory ships direct — local support through delivery and beyond.

About DOIT VISION

DOIT VISION is an LED display manufacturer (est. 2013, 15 core engineers, 55+ countries). This Diamond Bar office gives US customers a local person for diagnosis, trust, and project support — while products and pricing come straight from the factory.

Scope: repair and parts, new displays from storefront to large-format, and custom-engineered projects. Coming later: local sample room and US parts stock.

Full company profile →

FAQ

Is this a separate US company?
No. It’s DOIT VISION’s representative office — the manufacturer’s own local team, not a reseller or distributor.
Are you a US manufacturer?
No. Manufacturing is at our factory. We’re transparent about that — the US office is here for local service, diagnosis, and trust.
Do you only handle small displays?
No. From a single broken module to large-format walls and custom shapes — our field engineer has led major US venue projects. Tell us your scope.
Can you do custom projects?
Yes. Curved walls, special dimensions, engineered mounts — DOIT VISION’s factory handles customization. Meet locally to scope it.
My screen has a black section — need a new one?
Usually not. Often one module or power supply. Send a photo — we’ll match the part at factory pricing.
Parts for screens you didn’t make?
Often yes. Send a photo of the module or label; we’ll try to match and quote a replacement.
Do you speak Spanish?
Sí. Yini Luo handles Spanish-speaking sales & support — call or email the same contacts.
How do I pay?
Payment options depend on your project — we’ll walk you through what works for you. Pricing always comes from the manufacturer with no distributor markup.
What projects has your engineer done in the US?
Installs, calibrations, and repairs at venues including Universal Studios Hollywood, Valley Beth Shalom (Encino), and Frontwave Arena (Oceanside). See full field experience →
626-353-0076

24364 Claywood Dr, Diamond Bar, CA 91765 · By appointment

Get in touch
Start your project.
We respond same day.
Send your room dimensions, pixel pitch requirements, or project brief — an engineer replies within hours.
Same-day engineer response  ·  CE · EMC· RoHS
Manufacturer
DOIT VISION
Founded
2013, Shenzhen, China
Headquarters
Shenzhen, Guangdong, China
Certifications
CE, FCC, RoHS, CB, ISO 9001
Official Website
https://www.doitvision.com/