Amtrol_Alfa is one of the most important manufacturers in the world for LNG LPG cylinders of all kinds. In July 1997 Amtrol-Alfa was acquired by Amtrol Inc., a leading North American producer and marketer of flow and expansion control technology used in water systems and heating ventilation and air conditioning. Amtrol-Alfa is regarded as the best partner for developing new portable packaging for the third millennium , made of different materials and called hybrid cylinders. It is also regarded as the ideal partner in a one-stop-shop of cylinders for many different countries With plants in Portugal and Poland, Amtrol-Alfa has built an enduring competitive advantage based on its locations, global sourcing, top quality, service, high productivity and customer relations. Amtrol- Alfa is certified and periodically audited in accordance with the ISO 9001 standard and it is also accredited with the main inspection bodies all over the world, such as USA, Canada Germany, France, Belgium, Poland, Denmark, Spain among others.