1. Rock wool felt: With fine heat insulation property and sound absorption effect , it is applicable to big sized pipelines, wall and roof.

2. Rock wool felt with fiber glass cloth: It is applicable to big-span industral facilities and buildings. It is breaking-resistant and facilitates construction. It also has dustproof function when being used on constructed wall.

3. Rock wool felt with aluminum foil: It is especially suited for circular ipelines, small equipment and pipelines of air light steel structure as it facilitates the construction. It has better functions of waterproof, dustproof and heat insulation and could reduce liquid drop along pipelines.

4. Rock wool felt with metal mesh: It is suitable for conditions with great shake and high temperature. The product is often recommended to be used for heat insulation material on boilers, ships, valves and large-sized irregular pipes.