巴林采购需求：泄漏检测仪，气体检测仪，安全报警系统，气体检测仪价格，天然气泄漏检测仪，多气体检测仪

I urgently need a quote for LPG gas leak sensors in quantities of 1, 60, 240, 1,000, 5,000, and 10,000 units. The sensors should be suitable for outdoor use in restaurant gas cylinder storage areas, with a robust IP rating and explosion-proof safety certifications for proximity to LPG tanks. Additionally, I'm looking for a LoRa communication system that includes building the necessary gateways with 4G connectivity in urban settings. The gateway should be powered by both wired and solar sources, and capable of supporting our alert system for real-time notifications to restaurant owners. A web portal featuring user locations, device status, and leak statistics is essential, along with our branding. Please include options for future integration with shut-off valves.