घर पर मेडिकल ऑक्सीजन सिलेंडर का उपयोग कैसे करें? आवश्यकताएँ:- 1. गैस से भरा मेडिकल ऑक्सीजन सिलेंडर 2. FA वाल्व / ऑक्सीजन सिलेंडर रेगुलेटर 3.…
How to use a medical oxygen cylinder at home. Requirements : medical oxygen cylinder filled with gas. FA Valve / oxygen cylinder regulator. 3 in…
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