CARLOS Quality Features 1.Design : Latest OEM specifications are adopted in the design of CARLOS water pumps , superior casting , ball/roller bearings are applied as OE design to increase the durability and life . 2.Components : Pump housing is made form standards materials and no recycled material is accepted ;Castings are precisely machined and enhanced by heat treatment when needed . 3.Assembly : Products assembly procedures are strictly followed the assembly working instruction books , when pump housing , impeller ,bearing ,water seal or flange assembly together . Quality Control : Effective quality system and strict inspection criteria are performed during the process of manufacturing .Water pumps are received 100% leakage test and bearing vibration test before delivery .