What is the material of ordinary Maotai wine bottle?

The common Maotai wine bottle is made of milky glass.

Maotai, a specialty of Maotai Town, renhuai city, Zunyi City, Guizhou Province, is a symbolic product of chinese national geography. Moutai is a traditional specialty wine in China. It is one of the world's three largest distilled spirits, which is as famous as Scotch whisky and French cognac, and also one of China's three famous wines. It is also the originator of Daqu Maotai-flavor liquor with a history of more than 800 years.