This video explains the main functions and practical uses of the 0.4kV fire control cabinet in a clear, step-by-step format. Viewers will see a full factory walkthrough of Shenzhen Dongshengyuan's production lines, including sheet metal fabrication, gas-filled switchgear assembly, and quality inspection. Learn how the company designs, tests, and services low-voltage distribution and fire control equipment for power grids and industrial projects.