[Class : 9] Distribution Transformer.

[Class : 6] Metallic Container/ Capsules For All Types Of Transformer Included In Class 6

[Class : 37] Installation, Maintenance And Repairs Of All Types Of Transformers Included In Class 37

[Class : 9] Manufacturing All Types Of Transformers

[Class : 42] Designing Of All Types Of Transformers Included In Class 42