Come and see our amazing products. Portable air purifier, patented product,5 million pulsed negative ion release,It can be worn on the neck and placed on the desktop. It is suitable for a variety of situations,10-12 hours long battery life, long-lasting protection of respiratory health.Generate 5,000,000 pcs/cm3 negative ions. Efficiently remove PM particles floating in the air, such as haze, dust, and smoke. Removal of harmful (Laboratory testing rate of removal reaches 93.38%), Increase the amount of negative ions in the environment, make people feel refreshed, relieve stress, and refresh the mind.Your logo is welcome. Price for over 1000pcs is for sea shipment. Pls confirm further with us if any query about packing info, inventory status and time schedule.