Yong Ming is doing miniature bulb cover a wide range mostly low voltage incandescent type with unique shapes, bases and filament configurations. Most miniature bulbs were originally manufactured for the specific application or type of equipment with precise lighting requirements. To miniaturize the tungsten filaments we coil the filament wire, effectively shortening the length so it could fit in smaller bulb shape. Bulb inserted with noble gas could increase lumen and make life much longer. Led technology with its small form factor, long life, and high efficiency, is no an alternative for replacing the common miniature bulb. However, we do manufacture & supply those are unchangeable.