Which Gree factory do you work for? I work for the third factory.
If you focus on the tonnage to measure the price, then glass wool is more expensive.
Relatively speaking, gass wool is more expensive.
If you focus on the tonnage to measure the price, you will find that glass wool, Owens Corning, for example, is more expensive. If you focus on square meter to measure the price, then rock wool is more expensive than glass wool. That depends on how you would measure the price.
Glass wool board is more expensive than rock wool, but it is lighter in volume-weight than rock wool, which has the advantages that it will not cause itching of skin if exposed to skin, and its color is relatively bright with good thermal insulation and sound insulation.
