... timely supply 5.sincere service Fixed, sealing solar cell components, help to enhance strong components and ... ,powder coated,anodized,electrophoresis,wooden grain,sandblasting,high oxidation film (24-30um).3.Advantages: 1 ... ) elastic ratio, rigid, metal fatigue value are high; 5) transportation, installation is convenient, even scratching ... : GB5237-2008 Aluminium extrusion solar panel frame structure