ATEQ is a French leak and flow testing equipment manufacturer, founded in 1975, that has developed a dedicated hydrogen (H2) product line addressing the automotive, refueling infrastructure, and fuel cell sectors. Its H6000 portable hydrogen leak tester uses hydrogen as a tracer gas—a cheaper, non-toxic alternative to helium—for detecting even the smallest leaks in hydrogen tank components, bipolar plates, refueling nozzles, breakaways, and UHP flexible hoses. ATEQ also provides testing solutions for final vehicle assembly and hydrogen dispensing equipment operating at 350 or 700 bar. Having acquired tracer gas specialist VIC in 2023, ATEQ now serves automotive, medical, e-mobility, data center, and hydrogen customers worldwide from its French origins as a global leak-testing leader.