... PCB board and glass lens rapidly, no mark left.5. XM alloy is light, thermal conductivity: ≥283 W/M*K, equal ... of other metal material. 6. Polished, anodic oxidated, and laminated, XM alloy won' t fade for 8 years. 7 ... . XM alloy and other components all meet RoHS standard. 8. The ...