The majority of glass wools are yellow, while glass wools with the color of red or other are called color glass wool which are rarely used.
Thermal insulation properties: Red yellow glass VS Yellow glass wool. Thermal conductivity (K): below 0.039 VS over 0.044; Resilience: good VS poor. Distribution: even VS uneven. Irritation: non-irritating VS irritating and cause itching of skin. Dust: without dust VS with dust. Shot content: zero VS non-zero. Red glass wool is an environmental-friendly material.
