SJ/T 11991-2025 Function Measurement Methods for Electronic Projectors is a legal practice software product available on the Whop marketplace, created by jade889 and launched in July 2026.

SJ/T 11991-2025 lays out the test procedures that labs and manufacturers use to check whether an electronic projector actually delivers what the brochure claims. It covers everything from basic AV inputs and network features to advanced functions like geometric correction, multi-screen interaction, and voice control. If you are buying projectors in bulk, running a quality lab, or writing product specs, this document gives you the same testing playbook that major Chinese manufacturers and inspection centers follow. **Available in Chinese only. For English or other language versions, purchase at [www.china-standard.com](http://www.china-standard.com).**

SJ/T 11991-2025 Function Measurement Methods for Electronic Projectors has is priced at $9.99 (one-time payment).

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