What kind of lampshade is better for LED lights? Light loss is small, and point light sources can be hidden?

There are two kinds of LED lamp shade materials in the mainstream market: PC plastic and fluorescent sandblasted glass. Fluorescent glass has good light transmittance, general shading, difficult processing and high cost. PC plastic, mainly diffused PC, is related to the wall thickness of lampshade, which is more than 90%1mm, and the wattage of shading light source is 7-9W, which is relatively common, low in cost and not fragile. At present, the big brands in the market are mainly diffusion PCs of Teijin, Mitsubishi, Kirin, Chuguang and SABIC.