Are paper cups insulated? Of course. The insulated paper cup is one of the disposable paper cups. It is hollow inside and has the function of heat insulation, that is, double layers, but not like double-layer cups, but there is a gap between the two layer

The F-flute paper cup, also called corrugated paper cup, is a high-grade disposable paper container used for daily drinking. It is in the shape of a cup and the outer layer is a neatly arranged corrugated paper cup wall. It has a very strong heat insulati

The double-layer paper cup, as its name implies, means that the paper cup is double-layered and has two layers. The quality of double-layer paper cups is better than that of single-layer paper cups. The use time of double-layer paper cups is also longer t