Santosh Kumar sir ( Ara Bihar )

Mein Santosh kumar Ara bihar se hoon 
Mein Gijra Devi polytechnic college Bihiya ka work shop instructer hoon.
Muje 25 saal ka Teaching experience hein.
Yaha apko mechnical machine ka practical ka video mileyga .
Mere channel ko subscribe kare 
Dhanyawaad.