The oil industry has strict requirements for pressure sensors, the most important being explosion-proof, followed by accuracy and stability. Most of the previous products used foreign products. Now the pressure sensors used in the oil industry are gradually transitioning to domestic products, and domestic products are also very mature. , Shanghai Automation Instrumentation Co., Ltd. and China National Petroleum Co., Ltd. have been cooperating for nearly eight years. The products have not had any problems. They are now long-term partners. Recently, customers have put pressure on wireless transmission, and they are also integrated. We are working hard on research and development. Friends with this technology can communicate a lot. After wireless is used in some special occasions, it will be an external trend, and the market space will also be very large. Previously used this, this is to be done on this basis. Integrate wireless transmission.