क्या होता है Back Pressure|Back pressur कैसे काम करता है|injection moulding machine|advantage

[@satyabratasahu3824]

Thank you sir for this information ❤

[@plasticspolytechnology181]

Wlc ,❤️

[@shailendrajadon3599]

Well explain sir

[@plasticspolytechnology181]

Tq

[@shailendrajadon3599]

Suck back kaise lagta hai uskei upar bhi video banaiye sir.. Please

[@plasticspolytechnology181]

ok

[@ma2643]

Pls proffesor change kijiye ,woh khud hi confuse hai