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Jining Heli&Long Electromechanical Equipment Co., Ltd. is located in Yutai County, Jining City, Shandong Province, the "Hometown of Confucius and Mencius". It is surrounded by famous scenic spots such as the Three Confucian Shrines, Mount Tai, Weishan Lake, and Liangshan Marsh. It is adjacent to the Beijing-Shanghai Railway, the Beijing-Hangzhou Grand Canal, and the Ridong Expressway, with convenient and accessible transportation.The main products of the company include: Mine pressureless air door, shock wave resistant valve, shock wave resistant airtight door, fireproof fence dual-purpose door, waterproof airtight door, refuge chamber valve, refuge chamber explosion-proof door, inclined shaft explosion-proof door, mechanical interlocker, mine air door control device, compressed air self-rescue device, pneumatic car stopper, pneumatic horizontal brake, pneumatic car stopper beam, pneumatic switch shifter, driver control turnout device, mine automatic water spraying and dust suppression device, etc.The company adheres to the business philosophy that the customer is always God. We sincerely welcome new and old customers to visit and guide, negotiate and cooperate to create a win-win situation.