Is it better to buy Taobao or JD.COM for the pressure reducing valve of liquefied gas tank? COM？

I can't buy either. It is best to shop online in a physical store.

The function of the pressure reducing valve on the gas tank is to reduce the liquefied gas in the gas tank into gas, and then enter the gas stove through the pipeline for combustion, so as to limit the explosion of the gas tank caused by excessive pressure in the gas tank. Therefore, it is best to buy this kind of goods online in a physical store with quality assurance. Don't buy on any network platform to avoid security problems.