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Shenzhen Xunwei Environmental Protection Co., Ltd. (abbreviated as 'Shenzhen Xunwei Environmental Protection'), the company specializes in the research, development, and application of environmental protection + Internet of Things technology. With over ten years of deep cultivation in the environmental monitoring field, it has accumulated extensive industry experience in environmental detection. Through continuous investment in R&D and technological innovation, the company has now developed multiple mature product lines, including gas sensors, gas detection modules, gas alarms, water quality sensors, meteorological sensors, and other environmental monitoring terminals. Meanwhile, Beisian can customize detection solutions for various application environments according to customer needs; offering thousands of gas detection instruments, conventional water quality detection products, and conventional meteorological detection products. These are widely used in various fields such as petroleum, chemical industry, smelting, power, environmental protection, firefighting, coal, metallurgy, shipping, pharmaceuticals, research institutions, gas pipeline networks, safety protection, and more.