fire dv (deluge valve)system full information Hindi||high velocity/medium velocity dv system

[@allupdatesdhamaka6975]

Good information sir

[@rajaramkumar8944]

Yessir

[@allupdatesdhamaka6975]

Tq sir

[@ITSSHANKAR50]

Bro even you don't know the actual name of equipment 😂

[@theskshow24]

सबको आधा अधूरा ही ज्ञान रहता है😂😂😂

[@Mirza6070]

Kuch smaj me nahi araha or cameraman ek to bhaai isko nahi dekhna jo dikha raha he uspar zoom nahi karta or isi ko dikha rha he Kyaa yrr