This is the price inquiry on Taobao in China：yuan
Plasma Ozone Generator Negative Oxygen Ion Air Purification Unit Small Portable Desktop Home Deodorizer
Air purification device purifies the air with negative ions and no odor
Plasma model removes static electricity whole-house disinfection
Plasma/negative ion air purifier
Decompose negative ions from the root without odor
Scientific sterilization, formaldehyde removal, to avoid repeated secondary pollution
Whole house purification saves time and effort
Negative ions can purify the air from PM2.5 and second-hand smoke.
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