... Green/Blue/Yellow Surface Polyester powder spraying Material Die-cast aluminum Size ¢50(Dia.)*65mm(Height) Power ... spot and yellow ring.5,Plating treatment,with high reflective efficiency,no delamination,heat-resistant. ... 's made of high hardness resin not glass.So it is better shock resistance.4, ... source.It has no light pollution,with harmful chemical and fragile glass. ApplicationIt can be widely used ...