In this lecture we will study
1. Definition of Investing materials
2. Ideal requirements
3. Classification
4. Gypsum Bonded Investments : Detail
5. Phosphate Bonded Investments
6. Silica Bonded Investments
Link fo the topic Gypsum products
[ Ссылка ] : Gypsum products Part 1
[ Ссылка ] : Gypsum products Part 2
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