DMS HEAT SYSTEMS IND. TİC.A.Ş. Our company, which started to serve in the natural gas sector in 2004 with the vision of "Everything about natural gas", has also started to produce all kinds of Flexible Stainless Gas Connection Hoses for Residential and Industrial uses under the OPEX brand. Our company continues on its way with its dynamic, quality staff and effective service principle in order to closely follow current innovations and demands, expand its product range, become one of the leading companies in the sector with new investments, and meet customer satisfaction and demands with developing technology. It offers products that do not harm human health, are hygienic, durable in difficult conditions, long-lasting, easy to assemble and user-friendly. As a manufacturer, the OPEX brand has the capacity to meet all the demands and needs of its customers with its new investments, high technology and experienced staff. Our products are tested for compliance with the relevant quality standards in our well-equipped laboratory in our factory and then offered for use. It carries the excitement of the first day about ensuring the sustainability of success with the principle of continuous improvement at the point of maximizing customer satisfaction.