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iduoduo | Custom Signs & Commercial Signage Manufacturer
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iduoduo | Custom Signs & Commercial Signage Manufacturer
+86-13689586814 sales@led3dsigns.com

Support Center

Resources & Downloads

Everything you need to plan, design, and install your signage. Access our color charts, font lists, technical guides, and documentation.

Download Center

Product catalogs, spec sheets, and user manuals.

View Files →

Color Guide

Standard Acrylic colors, LED, and vinyl options.

View Colors →

Font Options

Curated font lists for fast production and legibility.

Browse Fonts →

Videos

Product demos, factory tours, and tutorials.

Watch Now →

FAQs

Common questions on shipping and warranty.

Get Answers →

Popular Downloads

View All Files →

2024 Product Catalog

PDF • 4.5 MB

Standard Color Chart

PDF • 1.2 MB

Meanwell Power Supply Specs

PDF • 3.5 MB

Featured Videos

See our production quality and capabilities.

View Gallery
Factory Tour

Factory Production Tour

2:45 • Inside our Shenzhen workshop
Install Demo

Spacer Mounting Guide

5:12 • Step-by-step tutorial
Quality Control

Strict Quality Control

3:10 • How we ensure durability

Can’t find what you’re looking for?

Our engineering team is here to help with custom technical specifications and design questions.

Contact Support →

Send Your Inquiry Now

Iduoduo Tech

Premium LED Signs
Built to Shine

Illuminated Signs

  • LED Neon Signs
  • Front lit Letters
  • Back Lit Letters
  • Front & Back lit Letters
  • Light Boxes
  • Marquee Letters

Non-illuminated Signs

  • Acrylic Letters
  • PVC & Plastic Letters
  • Metal Letters
  • Metal-Faced Letters
  • Foam Letters
  • ADA & Directional Signs

Resources & Company

  • About Us
  • Contact Us
  • Resources
  • Videos
  • Downloads
  • FAQs

Iduoduo Tech

Premium LED Signs
Built to Shine

  • LED Neon Signs
  • Front lit Letters
  • Back Lit Letters
  • Front & Back-lit Letters
  • Light Boxes
  • Marquee Letters
  • All Products
  • Illuminated Signs
  • Non-Illuminated Signs
  • Signage Accessories
  • Customize Products
  • Acrylic Letters
  • PVC & Plastic Letters
  • Metal Letters
  • Metal-Faced Letters
  • Foam Letters
  • ADA & Directional Signs
  • About Us
  • Contact Us
  • Resources
  • Videos
  • Downloads
  • FAQs

© 2025 Iduoduo Tech. All Rights Reserved.

  • Home
  • Illuminated Signs
    • LED Neon Signs
    • Front lit Letters
    • Back Lit Letters
    • Front & Back-lit Letters
    • Light Boxes
    • Marquee Letters
  • Non-Illuminated Signs
    • Acrylic Letters
    • PVC & Plastic Letters
    • Metal Letters
    • Metal-Faced Letters
    • Foam Letters
    • ADA & Directional Signs
  • LED Neon Signs
  • Resources
    • Font Options
    • Color Guide
    • Videos
    • Download
    • FAQs
  • About
  • Blog
  • Contact
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