1. Material: ZL101A. 2. Application: Military electronic products. 3. Size: Wall Thickness: The local thinning of wall-thickness is 1.5 mm. 4. Keypoint of technique: The structure of the casting is complicated, multi-cavity and boss inside, dimensional accuracy is very high. 5. Heat Treatment: T6, Ageing. 6. Standard: ASTM, ISO, QJ1700A—2004. 7. Acceptance criteria: EN 12681:2003, GB/T.