Vacuum Box Testing is a leakage detection method commonly used for weld seams and tank bottoms, especially in chemical and fuel storage tanks. The process involves applying a vacuum box with a soap solution; any leakage will appear as visible bubbles, allowing immediate identification of defects. This non-destructive testing method is widely recognized as an industry standard for ensuring tank and pipeline integrity. It significantly enhances operational safety by preventing hazardous leaks and minimizing potential environmental and production risks.