... etc. The four main products series are T5, T6, T8 and T10.I. Aluminum-plastic products: Aluminum alloy with ... Aluminum lamp holder, PC plastic lamp holder, Aluminum-plastic combination lamp holder, Screws lamp holder, Aluminum singlet connecting lamp holder, Aluminum double cables connecting lamp holder, Stairs lamp holder, Barreled lamp holder, Dedicated Screws lamp holder, Sideling lamp holder etc ...