Rectangle Inground Pool Portable What does Oxygen concentration 28±2%

What does Oxygen concentration 28±2% mean

Model: MAF005A

Mainly composed of three parts    chassis

* Angle Display

Rectangle Inground Pool Portable What does Oxygen concentration 28±2%Specifications Product Type Large outdoor swimming pool Material Fiberglass Thickness 20 300mm customized Color Blue Shape Custom Made Surface High Surface Hardness Advantage Easy to install and clean, 30 years guarantee Delivery requirements Meet the loading and unloading transportation distance, packaging moisture proof, shock resistance, impact resistance, etc Product Accessories All Fibreglass pools have a Pump, Filter, Skimmer, light, inlet, and