1. Choose appropriate thermal conductive materials, taking into account both thermal conductivity and toughness.
2. Increase the thickness of rivet joint of lamp head, recommend more than 1.4 mm.
3. The step is placed 2 mm in riveting position or the R angle is excessive.
4. Stabilize the riveting press pressure and riveting depth. It is recommended that 200,000-300,000 sets of riveting needles be replaced once.