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  • Riveting Fracture of Lamp Head(Fracture of lamp head during riveting)
  • Black spots and yellowing(Black spots appeared in the lamp cup during injection moulding)
  • Burning, Bubble(Burning and bubbles appeared in the lamp cup during injection moulding)
  • Appearance fog(When making lamp cups, the appearance is foggy and dull.)
  • Processing is not smooth(In the process of injection moulding, the lamp head is easy to break directly, and the dry material is broken in the mould.)
  • Contraction mark(When making plastic-clad aluminium bulb lamp, the shrinkage marks on the bottom of some cups are serious.)
  • Crack(Cracking occurs when plastics-clad aluminium lamp shell is manufactured and placed naturally or tested at high and low temperatures (-40/120 C).)