Beijing Dorland System Control Technology Co., Ltd. is a leading manufacturer of explosion-proof electrical automation and intrinsically safe industrial explosion-proof communication terminals, as well as related technologies and services in China. Since registered in Beijing ZhongGuanCun Silicon Valley, High-tech Park in 2004, DORLAND， step towards and become a high-tech enterprise, engaged in industrial automation control technology, safety explosion-proof products R&D and services. In a long time, DORLAND focused on explosion-proof industry product development, production, and marketing. It produces wireless electric control, intrinsically safe switch, intrinsically safe industrial function/intelligent intrinsically safe mobile phones, digital cameras, intrinsically safe PDA, explosion-proof laptop, explosion-proof tablet, explosion-proof identification (RFID)/BARCODE, etc. Its application field covers the petroleum, chemical, gas, medicine, electricity, coal, metallurgy, military industry and so on. In addition to intrinsically safe solutions, DORLAND has built a customer-centered working system, selling advanced and reliable products, providing effective intrinsically safe solutions and perfect technical support.