What type of desiccant does the transformer produced by Datong ABB Transformer Company use?

Silica gel desiccant, particle size 4-8mm, water content ≤4%. Colorless transparent silica gel desiccant+a certain proportion of blue (or orange) silica gel desiccant, or use pure blue (or orange) silica gel desiccant.

Why BASF? It's all a lie. Even BASF's is sold from China and then transferred back. I have been making desiccant for 5 years, and transformer factories basically buy what I said above.