Transport and Engineering Company â TRENCO â, the leading nationaltire manufacturer, is affiliated to The Holding Company forChemical Industries, which belongs to the Ministry ofInvestment.The administration buildings and the factories are located inSmouha area, Alexandria. TRENCO has a sales branch located inAl-Tahreer Square in Cairo as well as a storage facility in The 6thof October City.NISR tires are well reputed worldwide for their endurance anddistinguished performance. The emblem of NISR on The Tires and TheInner Tubes demonstrates their good quality and strength.TRENCO started producing NISR Conventional Bias Tires, forPassenger Cars, Light Trucks, Buses, Trucks, Tractors, Bicycles andMotorcycles in 1956 licensed by Mansfield Company from USA.