1. What are the characteristics of Solid Class 4? | ![]() |
2. What are some examples of Solid Class 4 materials? | ![]() |
3. How do Solid Class 4 materials differ from other classes? | ![]() |
4. What are the applications of Solid Class 4 materials? | ![]() |
5. How can Solid Class 4 materials be identified? | ![]() |