Products

Suppliers
Filter Gallery
39,784

Negative Ions Equipment

Products
Sound Equipment Audio Equipment Hotel Equipment Electric Home Equipment Card Equipment Detection Equipment

Sorry! No matches were found.

Negative Ions Negative Potential Therapeutic Equipment

Negative Ions Negative Potential Therapeutic Equipment

US $ 350-1,200 / Piece FOB
1 Piece (MOQ)
More
Main Products: Handheld laser therapy device, Wrist type laser therapy device, Laser comb and laser cap, High potential therapy device, Millimeter wave therapy device, Nail fungus laser treatment instrument
Contact Supplier
Audited Supplier Audited Supplier Since 2011
Hubei YJT Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Hubei, China Since 2011
Chat Now Send Inquiry
New Beauty Personal Care Products Facial Negative Ion Beauty Equipment

New Beauty Personal Care Products Facial Negative Ion Beauty Equipment

US $ 17.6-20.6 / Piece FOB
20 Pieces (MOQ)
More
Application : Home
Contact Supplier
Since 2024
Shenzhen Dreamit Tech Limited

Guangdong, China Since 2024
Chat Now Send Inquiry
Negative Ion High Potential Therapeutic Equipment

Negative Ion High Potential Therapeutic Equipment

US $ 300-1,000 / Piece FOB
1 Piece (MOQ)
More
Main Products: Handheld laser therapy device, Wrist type laser therapy device, Laser comb and laser cap, High potential therapy device, Millimeter wave therapy device, Nail fungus laser treatment instrument
Contact Supplier
Audited Supplier Audited Supplier Since 2011
Hubei YJT Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Hubei, China Since 2011
Chat Now Send Inquiry
Hot Sale Negative Ion Portable Massage Equipment Made in China

Hot Sale Negative Ion Portable Massage Equipment Made in China

US $ 35-49 / Piece FOB
1 Piece (MOQ)
More
Feature : Hand-Held
Contact Supplier
Audited Supplier Audited Supplier Since 2011
Health&Health (Group)Co.,Ltd.

Guangdong, China Since 2011
Chat Now Send Inquiry
Home Use Negative Ion Atomization Opens Pores Moisturizes Nourishes Skin Beauty Equipment

Home Use Negative Ion Atomization Opens Pores Moisturizes Nourishes Skin Beauty Equipment

US $ 4.7-5 / Piece FOB
500 Pieces (MOQ)
More
Main Products: Cosmetic items, Kitchenware, Hosehold, Fitness equipment, Toy, Outdoor supplies
Contact Supplier
Audited Supplier Audited Supplier Since 2010
Good Seller Co., Ltd.

Trading Company

Zhejiang, China Since 2010
Chat Now Send Inquiry
Skz813 Textile Resolution Negative Ion Concentration Tester Dynamic Friction Method Meter Equipment

Skz813 Textile Resolution Negative Ion Concentration Tester Dynamic Friction Method Meter Equipment

US $ 13,860-15,400 / Piece FOB
1 Piece (MOQ)
More
Certification : CE, ISO9001: 2000
Contact Supplier
Audited Supplier Audited Supplier Since 2020
SKZ International Co., Ltd.

Shandong, China Since 2020
Chat Now Send Inquiry
Welding Dust Removal Equipment Smoke Exhauster

Welding Dust Removal Equipment Smoke Exhauster

US $ 760-1,120 / Set FOB
1 Set (MOQ)
More
Main Products: Environmental Protection and Energy Saving Equip, Waste Gas Treatment Equipment, Smoke and Dust Purification Machine, Dust Collector, Vacuum Cleaner, Polishing Table, Polishing and Dust Removal Table,
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangdong Southern Environmental Protection Engineering Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
CCD Visual Inspection Equipment for Positive and Negative Battery Electrode Detection

CCD Visual Inspection Equipment for Positive and Negative Battery Electrode Detection

US $ 3,000-5,000 / Piece FOB
1 Piece (MOQ)
More
Application : Lithium-ion Battery
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Xiamen Tmax Battery Equipments Limited

Fujian, China Since 2020
Chat Now Send Inquiry
Air Filter/Laser Welding Dust Removal Equipment

Air Filter/Laser Welding Dust Removal Equipment

US $ 560-780 / Set FOB
1 Set (MOQ)
More
Main Products: Environmental Protection and Energy Saving Equip, Waste Gas Treatment Equipment, Smoke and Dust Purification Machine, Dust Collector, Vacuum Cleaner, Polishing Table, Polishing and Dust Removal Table,
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangdong Southern Environmental Protection Engineering Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
Polishing Water Washing and Dust Removal Equipment

Polishing Water Washing and Dust Removal Equipment

US $ 1,680-2,060 / Set FOB
1 Set (MOQ)
More
Usage : Fragrance, Dust Removal, Smoke Removal, Adding Negative Ion, Humidification, Formaldehyde Formaldehyde, Adding Oxygen, Sterilization
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangdong Southern Environmental Protection Engineering Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
Laser Cutting Welding Smoke and Dust Purification Equipment

Laser Cutting Welding Smoke and Dust Purification Equipment

US $ 2,520-2,880 / Set FOB
1 Set (MOQ)
More
Main Products: Environmental Protection and Energy Saving Equip, Waste Gas Treatment Equipment, Smoke and Dust Purification Machine, Dust Collector, Vacuum Cleaner, Polishing Table, Polishing and Dust Removal Table,
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangdong Southern Environmental Protection Engineering Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
Sdn Gas Treatment Industrial Baghouse Dust Collector Dust Collection Equipment

Sdn Gas Treatment Industrial Baghouse Dust Collector Dust Collection Equipment

1 Set (MOQ)
More
Control Mode : Remote Control
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Sdn Environmental Protection Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Sichuan, China Since 2024
Chat Now Send Inquiry
Related Searches
Air Purifier Hair Dryer Other Air Clean Equipments Reverse Osmosis System Humidifier Hair Straightener
HEPA Air Purifier Portable Air Purifier Car Air Purifier Smart Air Purifier Home Air Purifier
Hot Sale Infrared Sauna Room Beauty Salon Equipment

Hot Sale Infrared Sauna Room Beauty Salon Equipment

US $ 699-799 / Piece FOB
1 Piece (MOQ)
More
Main Products: Steam Sauna Room, Infrared Sauna Room, Outdoor Sauna Room, Half Body Sauna Room, Portable Halfbody Sauna, Infrared Fumigation Chair, Infrared Sauna Bed, Infrared Foot Sauna
Contact Supplier
Audited Supplier Audited Supplier Since 2023
Anhui Wilkes Health Science and Technology Co., Ltd.

Anhui, China Since 2023
Chat Now Send Inquiry
Electrostatic Powder Coating Equipment

Electrostatic Powder Coating Equipment

US $ 1,980-2,360 / Set FOB
1 Set (MOQ)
More
Noise : 70-90db
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangdong Southern Environmental Protection Engineering Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
Laser Welding Dust Removal Equipment

Laser Welding Dust Removal Equipment

US $ 1,480-1,850 / Set FOB
1 Set (MOQ)
More
Main Products: Environmental Protection and Energy Saving Equip, Waste Gas Treatment Equipment, Smoke and Dust Purification Machine, Dust Collector, Vacuum Cleaner, Polishing Table, Polishing and Dust Removal Table,
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangdong Southern Environmental Protection Engineering Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
Landpack Ld-XP04 4 Heads Negative Ion Tall Medium Short Round Bottle Washing Machine

Landpack Ld-XP04 4 Heads Negative Ion Tall Medium Short Round Bottle Washing Machine

US $ 5,956-12,644 / Set FOB
1 Set (MOQ)
More
Dosing Device : Plunger
Contact Supplier
Audited Supplier Audited Supplier Since 2017
FOSHAN LAND PACKAGING MACHINERY CO., LTD.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2017
Chat Now Send Inquiry
Laser Cutting Welding Dust Purification Equipment

Laser Cutting Welding Dust Purification Equipment

US $ 720-920 / Set FOB
1 Set (MOQ)
More
Main Products: Environmental Protection and Energy Saving Equip, Waste Gas Treatment Equipment, Smoke and Dust Purification Machine, Dust Collector, Vacuum Cleaner, Polishing Table, Polishing and Dust Removal Table,
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangdong Southern Environmental Protection Engineering Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
Marya Pharmaceutical CE Certificate Cell Drug Preparation Station Equipment Supplier

Marya Pharmaceutical CE Certificate Cell Drug Preparation Station Equipment Supplier

US $ 14,000 / Piece FOB
1 Piece (MOQ)
More
Noise : >100db
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Shanghai Marya Pharmaceutical Engineering & Project Co., Ltd.

Manufacturer/Factory & Trading Company

Shanghai, China Since 2020
Chat Now Send Inquiry
Explosion Proof Sand Belt Polishing and Dust Removal Equipment

Explosion Proof Sand Belt Polishing and Dust Removal Equipment

US $ 3,780-4,150 / Set FOB
1 Set (MOQ)
More
Main Products: Environmental Protection and Energy Saving Equip, Waste Gas Treatment Equipment, Smoke and Dust Purification Machine, Dust Collector, Vacuum Cleaner, Polishing Table, Polishing and Dust Removal Table,
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangdong Southern Environmental Protection Engineering Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
Flat Sanding Belt Polishing Explosion-Proof Dust Removal Equipment

Flat Sanding Belt Polishing Explosion-Proof Dust Removal Equipment

US $ 2,250-2,620 / Set FOB
1 Set (MOQ)
More
Noise : 70-90db
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangdong Southern Environmental Protection Engineering Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
Related Videos
  • What is Negative Ions Negative Potential Therapeutic Equipment
    What is Negative Ions Negative Potential Therapeutic Equipment
    US $ 350-1,200 /Piece
    1 Piece (MOQ)
    Contact Supplier
  • What is New Beauty Personal Care Products Facial Negative Ion Beauty Equipment
    What is New Beauty Personal Care Products Facial Negative Ion Beauty Equipment
    US $ 17.6-20.6 /Piece
    20 Pieces (MOQ)
    Contact Supplier
  • What is Negative Ion High Potential Therapeutic Equipment
    What is Negative Ion High Potential Therapeutic Equipment
    US $ 300-1,000 /Piece
    1 Piece (MOQ)
    Contact Supplier
  • What is Hot Sale Negative Ion Portable Massage Equipment Made in China
    What is Hot Sale Negative Ion Portable Massage Equipment Made in China
    US $ 35-49 /Piece
    1 Piece (MOQ)
    Contact Supplier
Dust Removal Equipment in Polishing Workshop

Dust Removal Equipment in Polishing Workshop

US $ 5,620-6,080 / Set FOB
1 Set (MOQ)
More
Main Products: Environmental Protection and Energy Saving Equip, Waste Gas Treatment Equipment, Smoke and Dust Purification Machine, Dust Collector, Vacuum Cleaner, Polishing Table, Polishing and Dust Removal Table,
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangdong Southern Environmental Protection Engineering Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
Wet Electric Desulfurization Dust Removal and Smoke Removal Equipment

Wet Electric Desulfurization Dust Removal and Smoke Removal Equipment

US $ 13,580-14,200 / Set FOB
1 Set (MOQ)
More
Control Mode : Remote Control
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangdong Southern Environmental Protection Engineering Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
Mobile Pulse Vacuum Cleaning and Smoke Purification Machine

Mobile Pulse Vacuum Cleaning and Smoke Purification Machine

US $ 2,320-2,680 / Set FOB
1 Set (MOQ)
More
Main Products: Environmental Protection and Energy Saving Equip, Waste Gas Treatment Equipment, Smoke and Dust Purification Machine, Dust Collector, Vacuum Cleaner, Polishing Table, Polishing and Dust Removal Table,
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangdong Southern Environmental Protection Engineering Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry

Not exactly what you want?

Post Sourcing Request

About Negative Ions Equipment FAQ

  • QWhat are the key safety features in modern air purifiers?

    The Negative Ions Equipment is a key item within our extensive Air Purifier selection.Modern air purifiers incorporate various safety features, including automatic shut-off sensors, filter replacement indicators, and zero-ozone emissions technology. These elements ensure that the devices operate efficiently and safely, minimizing pollutants and providing a healthier living environment.

  • QWhy should you consider an air purifier when designing your living space?

    Discover the perfect Air Purifier addition with our Negative Ions Equipment.Integrating an air purifier into your living space's design is instrumental in ensuring high sterility and comfort. This applies especially in urban areas or allergy-prone seasons by proactively removing toxins and allergens and managing overall air quality, enhancing home safety aesthetically and health-wise.

  • QHow do HEPA filters in air purifiers improve indoor air quality?

    The Negative Ions Equipment is a premium choice in the Air Purifier category.HEPA filters in air purifiers efficiently capture 99.97% particulate matter as small as 0.3 microns. They trap allergens, bacteria, and viruses which significantly improves indoor air quality by preventing the circulation of contaminated air, making them crucial for environments needing high-purity air.

Marya China Pharmaceutical Compounding Aseptic Containment Isolation Equipment Manufacturers

Marya China Pharmaceutical Compounding Aseptic Containment Isolation Equipment Manufacturers

US $ 14,000 / Piece FOB
1 Piece (MOQ)
More
Usage : Fragrance, Dust Removal, Smoke Removal, Adding Negative Ion, Humidification, Formaldehyde Formaldehyde, Adding Oxygen, Sterilization
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Shanghai Marya Pharmaceutical Engineering & Project Co., Ltd.

Manufacturer/Factory & Trading Company

Shanghai, China Since 2020
Chat Now Send Inquiry
Negative Pressure Airclean System Weighing Equipment in Chemical/Pharmaceutical

Negative Pressure Airclean System Weighing Equipment in Chemical/Pharmaceutical

US $ 20,000-50,000 / Set FOB
1 Set (MOQ)
More
Main Products: Pharmaceutical Machinery, Clean Room Telephone, Negative Pressure Isolator, Air Shower Room, Laminar Flow Cart, Glove Box, Passing Box, Bag Unpacking Machine, Automatic Weighing and Dispensing System
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Jiangxi Miran Intelligent Manufacturing Co., Ltd.

Jiangxi, China Since 2024
Chat Now Send Inquiry
Dispensing Booth (Sampling/Weighing Unit) Laboratory Weighing Room Partial Purifying Equipment for Lab

Dispensing Booth (Sampling/Weighing Unit) Laboratory Weighing Room Partial Purifying Equipment for Lab

US $ 20,000-50,000 / Set FOB
1 Set (MOQ)
More
Control Mode : Touch
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Jiangxi Miran Intelligent Manufacturing Co., Ltd.

Jiangxi, China Since 2024
Chat Now Send Inquiry
TMAXCN Brand Automatic CCD Positive and Negative Battery Pack Testing Machine

TMAXCN Brand Automatic CCD Positive and Negative Battery Pack Testing Machine

US $ 4,000-7,000 / Piece FOB
1 Piece (MOQ)
More
Main Products: Battery Lab Equipment Line, Battery Production Equipment Line, Battery Pack Assembly Line, Li Ion Battery Materials, Laboratory Equipment, Lithium Battery Making Machine, Polymer Battery Assembly Machine, Cylindrical Battery Assembly Machine
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Xiamen Tmax Battery Equipments Limited

Fujian, China Since 2020
Chat Now Send Inquiry
Clean Room Equipment Furniture

Clean Room Equipment Furniture

US $ 200-5,000 / Piece FOB
1 Piece (MOQ)
More
Noise : 40-60db
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Hm Pharmaceutical Engineering & Project (Zhejiang) Co., Ltd.

Zhejiang, China Since 2024
Chat Now Send Inquiry
Pulse Filter Cartridge Dust Removal Equipment

Pulse Filter Cartridge Dust Removal Equipment

US $ 3,380-3,760 / Set FOB
1 Set (MOQ)
More
Main Products: Environmental Protection and Energy Saving Equip, Waste Gas Treatment Equipment, Smoke and Dust Purification Machine, Dust Collector, Vacuum Cleaner, Polishing Table, Polishing and Dust Removal Table,
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangdong Southern Environmental Protection Engineering Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
FRP Absorption Purification Tower Waste Gas Treatment Equipment

FRP Absorption Purification Tower Waste Gas Treatment Equipment

US $ 1,500-8,000 / Piece FOB
1 Piece (MOQ)
More
Certification : GS, CE, ISO9001
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Hebei Aoliande Chemical Equipment Co., Ltd.

Manufacturer/Factory

Hebei, China Since 2024
Chat Now Send Inquiry
TMAXCN Brand Automatic CCD Positive and Negative Electrode Detector Testing Machine

TMAXCN Brand Automatic CCD Positive and Negative Electrode Detector Testing Machine

US $ 5,000-8,000 / Piece FOB
1 Piece (MOQ)
More
Main Products: Battery Lab Equipment Line, Battery Production Equipment Line, Battery Pack Assembly Line, Li Ion Battery Materials, Laboratory Equipment, Lithium Battery Making Machine, Polymer Battery Assembly Machine, Cylindrical Battery Assembly Machine
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Xiamen Tmax Battery Equipments Limited

Fujian, China Since 2020
Chat Now Send Inquiry
High Efficiency Roller Slitting Machine for Pressing and Slitting Negative Electrode Plates in Lithium-Ion Batteries

High Efficiency Roller Slitting Machine for Pressing and Slitting Negative Electrode Plates in Lithium-Ion Batteries

US $ 5,000,000 / Set FOB
1 Set (MOQ)
More
Application : PE
Contact Supplier
Audited Supplier Audited Supplier Since 2025
Dongguan Pengjin Machinery Technology Co., Ltd.

Guangdong, China Since 2025
Chat Now Send Inquiry
Foreign Trade Portable Motor Negative Ion Hair Dryer Professional Salon Equipment Manufacturers Wholesale

Foreign Trade Portable Motor Negative Ion Hair Dryer Professional Salon Equipment Manufacturers Wholesale

US $ 3.9-4.8 / Piece FOB
500 Pieces (MOQ)
More
Main Products: Hair Dryer, Electric Blowing
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Guangzhou Xinyang Electric Appliance Co., Ltd.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
5 Plates Multifunctional Kangen Water Ionizer / Negative Ion Alkaline Water Machine

5 Plates Multifunctional Kangen Water Ionizer / Negative Ion Alkaline Water Machine

US $ 265 / Set FOB
10 Sets (MOQ)
More
Style for Purifier : Wall Mounted
Contact Supplier
Audited Supplier Audited Supplier Since 2011
Health&Health (Group)Co.,Ltd.

Guangdong, China Since 2011
Chat Now Send Inquiry
Fully Automatic Negative Ion Bottle Rinser for Syrup Glass Jar Washing Cleaning Machine

Fully Automatic Negative Ion Bottle Rinser for Syrup Glass Jar Washing Cleaning Machine

US $ 5,300-21,000 / Piece FOB
1 Piece (MOQ)
More
Main Products: Filling Machine
Contact Supplier
Audited Supplier Audited Supplier Since 2019
Qingzhou Tongda Packaging Machinery Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2019
Chat Now Send Inquiry
Always Fully Automatic Sanitary Napkin Machine with Negative Ion Philippines

Always Fully Automatic Sanitary Napkin Machine with Negative Ion Philippines

US $ 200,000-500,000 / Set FOB
1 Set (MOQ)
More
Certification : CE, ISO
Contact Supplier
Audited Supplier Audited Supplier Since 2018
QUANZHOU XINGYUAN MACHINERY MANUFACTURE CO.,LTD

Manufacturer/Factory & Trading Company

Fujian, China Since 2018
Chat Now Send Inquiry
View More

Related Searches

Water Heater Equipment Warm Equipment Professional Sound Equipment Wholesale Negative Ions Equipment Dispenser Equipment Digital Advertising Equipment Professional Audio Equipment Bluetooth Equipment Commercial Refrigeration Equipment Solar Water Heater Equipment

Browse by Categories

Home > Consumer Electronics > Air Conditioner, Purifier & Humidifier > Air Purifier > HEPA Air Purifier
1/834
TOP

Search Filter

Categories

More Less
  • Air Purifier
  • Hair Dryer
  • Other Air Clean Equipments
  • Reverse Osmosis System
  • Humidifier
  • Hair Straightener
  • Industrial Water Filter
  • Sewage Treatment Equipment
  • Hair Curler
  • Water Purifier

Dosing Device

More Less
  • Rotor
  • Surface Type
  • Capacity Cup

Filling Principle

More Less
  • Negative Pressure
  • Atmospheric Pressure
  • Pressure

Material Type

More Less
  • Liquid

Packaging Material

More Less
  • Plastic
  • Metal

Structure

More Less
  • Rotary

Company Type

More Less
  • Trading Company
  • Manufacturer/Factory
  • Group Corporation
  • Individuals/SOHO
  • Other

Company Location

More Less
  • Guangdong
  • Jiangsu
  • Zhejiang
  • Anhui
  • Shandong
  • Fujian
  • Henan
  • Hebei
  • Tianjin
  • Jiangxi
  • Shanghai
  • Shaanxi
  • Hubei
  • Beijing
  • Hunan
  • Liaoning
  • Sichuan
  • Shanxi
  • Gansu
  • Chongqing
  • Guangxi
  • Taiwan, China
  • Guizhou
  • Xinjiang
  • Jilin
  • Yunnan
Reset Done