Caliper measuring braille on an Area of Refuge sign

Compliance & Regulations

Ensure your projects meet ADA, safety, and global industry standards.

YIJIAO ISO 9001:2015 quality management system certification for billboard and illuminated sign manufacturing

ISO 9001 Signage Quality Control: Inside YIJIAO’s Quality Management Process

Explore YIJIAO’s ISO 9001:2015-certified signage quality management process, covering material inspection, precision fabrication, LED assembly, testing, final inspection, and export packaging.

UL certified channel letters compliance guide for North America electric sign projects

UL Certified Channel Letters for North America: Electric Sign Compliance Guide

Learn how YIJIAO provides UL certified channel letters and electric signage solutions for North American projects, including UL 48 and CSA compliance requirements.

Custom ADA Braille sign with raised tactile letters and Braille dots for office wayfinding

ADA Braille Signs Guide: Requirements, Materials, Applications & Project Planning

A practical guide to custom ADA Braille signs, covering tactile lettering, Grade 2 Braille, material options, production methods, applications, and installation planning.