- Shenzhen Wandi Technology Co., Ltd.Shenzhen Wandi Technology Co., Ltd. is a professional manufacturer focusing on gas detection alarms, flammable, explosive, toxic and harmful gas detection and alarm equipment, environmental monitoring and analysis instruments, and providing complete industrial safety and environmental monitoring system solutions. It is a national high-tech company integrating R&D, design, manufacturing, sales and services. The company is committed to becoming a domestic on-site detection instrument and system solution provider.The company's current product categories include: GASTiger series, EDW series portable gas detectors, FIX500 / FIX550 / FIX800 and FIX900 series online gas detectors, PDA600 series non-dispersive infrared desktop gas analyzers, FIX2100 gas alarm controllers, FIX5000 photoionization volatile organic compound monitors and micro-ambient air quality monitoring systems, dust online monitoring systems, odorous gas online monitoring systems, nitrogen oxides online monitoring systems, as well as wireless gas detection detectors based on the concept of the Internet of Things, wireless gas alarm controllers, and more than 120 varieties in ten series.