Heat insulating glass wool pipe shell is tubular heat insulating tube cured and formed after heating centrifugal glass cotton pad to which phenolic resin adhesive agent is applied.
保温玻璃棉管壳为离心玻璃棉毡施加酚醛树脂粘结剂加温固化成型的筒状保温管材。
2
A thermal insulating layer and a rubber pad are provided in the cup cover to obtain a good heat preservation effect and prevent drink from exudation.