We have developed a kind of next generation patent intelligent valve for lpg cylinders (suit for 8 kg, 10kg, 12kg, 14kg, 15 kg, 22kg, 45kg, 50kg cylinders etc), which have 6 special functions as following: 1. prohibit cross refilling gas into cylinders by any other gas companies except owner. 2. prohibit disassembly valve from cylinder by any others gas companies except owner. 3. to help gas company to control their end users & cylinder not lose anymore, which can help gas company to increase their profits over 50% more than last year. 4. writing, reading, gathering real time data into each chip at each process such as: set up cylinder files, filling gas, deliver gas, take back empty cylinders etc. 5. to realize informatization management gas company and set up your owned big database and help gas company to manage company easily. 6. tracking & monitoring each one of your cylinders during whole process.