[email protected] +44 20 8123 2220 (UK) +1 732 587 5005 (US) Contact Us | FAQ |
Advanced search

Global Cavitation Machine Market Research Report 2016-2026

December 2021 | 80 pages | ID: GCCF73486C24EN
HeyReport

US$ 1,800.00

E-mail Delivery (PDF)

Download PDF Leaflet

Accepted cards
Wire Transfer
Checkout Later
Need Help? Ask a Question
SUMMARY

The global Cavitation Machine market will reach xxx Million USD in 2021 with CAGR xx% 2021-2026. The objective of report is to define, segment, and project the market on the basis of product type, application, and region, and to describe the content about the factors influencing market dynamics, policy, economic, technology and market entry etc.

Based on products type, the report describes major products type share of regional market. Products mentioned as follows:
  • Table Model Devices
  • Hand-Held Devices
  • Wearable
Leading vendors in the market are included based on profile, business performance etc. Vendors mentioned as follows:
  • Mlay
  • Dermapeel
  • DFEDCLL
  • Todd
  • AG Trademark
  • Nuoxinus
  • Norlanya
  • HongTie
  • Ixaer
  • Ariana
  • S.K. Enterprises
  • Perfect Idea Tech
  • Longtree BeautyPro
Based on Application, the report describes major application share of regional market. Application mentioned as follows:
  • Hospitals
  • Aesthetic Clinics
  • Spas And Salons
  • Home Care
Based on region, the report describes major regions market by products and application. Regions mentioned as follows:
  • Asia-Pacific
  • North America
  • Europe
  • South America
  • Middle East & Africa
1 MARKET OVERVIEW

1.1 Objectives of Research
  1.1.1 Definition
Figure Cavitation Machine Picture
  1.1.2 Specifications
Table Product Specifications of Cavitation Machine
1.2 Market Segment
  1.2.1 by Type
Table Products Segment of Cavitation Machine
Table Global Cavitation Machine Market by Type, 2016-2026 (USD Million)
    1.2.1.1 Table Model Devices
Table Table Model Devices Overview
    1.2.1.2 Hand-Held Devices
Table Hand-Held Devices Overview
    1.2.1.3 Wearable
Table Wearable Overview
  1.2.2 by Application
Table Application Segment of Cavitation Machine
Table Global Cavitation Machine Market by Application, 2016-2026 (USD Million)
    1.2.2.1 Hospitals
Table Hospitals Overview
    1.2.2.2 Aesthetic Clinics
Table Aesthetic Clinics Overview
    1.2.2.3 Spas And Salons
Table Spas And Salons Overview
    1.2.2.4 Home Care
Table Home Care Overview
  1.2.3 by Regions
Table Global Cavitation Machine Market by Region, 2016-2026 (USD Million)

2 INDUSTRY CHAIN

2.1 Industry Chain Structure
Figure Industry Chain Structure of Cavitation Machine
2.2 Upstream
Table Cost of Cavitation Machine
Figure Manufacturing Process of Cavitation Machine
2.3 Market
  2.3.1 SWOT
Figure SWOT of Cavitation Machine
  2.3.2 Dynamics
Table Market Dynamics

3 ENVIRONMENTAL ANALYSIS

3.1 Policy
Table Policy of Cavitation Machine
3.2 Economic
Table GDP of Major Countries
3.3 Technology
Table Technology of Cavitation Machine
3.4 Market Entry
Table Market Entry of Cavitation Machine

4 MARKET SEGMENTATION BY TYPE

4.1 Market Size
  4.1.1 Table Model Devices Market, 2016-2020
Figure Table Model Devices Market Size and Growth, 2016-2020 (USD Million)
Figure Table Model Devices Market Size and Growth, 2016-2020 (in Volume)
Table Table Model Devices CAGR by Revenue and Volume, 2016-2020
  4.1.2 Hand-Held Devices Market, 2016-2020
Figure Hand-Held Devices Market Size and Growth, 2016-2020 (USD Million)
Figure Hand-Held Devices Market Size and Growth, 2016-2020 (in Volume)
Table Hand-Held Devices CAGR by Revenue and Volume, 2016-2020
  4.1.3 Wearable Market, 2016-2020
Figure Wearable Market Size and Growth, 2016-2020 (USD Million)
Figure Wearable Market Size and Growth, 2016-2020 (in Volume)
Table Wearable CAGR by Revenue and Volume, 2016-2020
4.2 Market Forecast
  4.2.1 Table Model Devices Market Forecast, 2021-2026
Figure Table Model Devices Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Table Model Devices Market Estimates and Forecasts, 2021-2026 (in Volume)
Table Table Model Devices CAGR by Revenue and Volume, 2016-2026
  4.2.2 Hand-Held Devices Market Forecast, 2021-2026
Figure Hand-Held Devices Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Hand-Held Devices Market Estimates and Forecasts, 2021-2026 (in Volume)
Table Hand-Held Devices CAGR by Revenue and Volume, 2016-2026
  4.2.3 Wearable Market Forecast, 2021-2026
Figure Wearable Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Wearable Market Estimates and Forecasts, 2021-2026 (in Volume)
Table Wearable CAGR by Revenue and Volume, 2016-2026

5 MARKET SEGMENTATION BY APPLICATION

5.1 Market Size
  5.1.1 Hospitals Market, 2016-2020
Figure Hospitals Market Size and Growth, 2016-2020 (USD Million)
Figure Market Size and Growth, 2016-2020 (in Volume)
Table Hospitals CAGR by Revenue and Volume, 2016-2020
  5.1.2 Aesthetic Clinics Market, 2016-2020
Figure Aesthetic Clinics Market Size and Growth, 2016-2020 (USD Million)
Figure Market Size and Growth, 2016-2020 (in Volume)
Table Aesthetic Clinics CAGR by Revenue and Volume, 2016-2020
  5.1.3 Spas And Salons Market, 2016-2020
Figure Spas And Salons Market Size and Growth, 2016-2020 (USD Million)
Figure Market Size and Growth, 2016-2020 (in Volume)
Table Spas And Salons CAGR by Revenue and Volume, 2016-2020
  5.1.4 Home Care Market, 2016-2020
Figure Home Care Market Size and Growth, 2016-2020 (USD Million)
Figure Market Size and Growth, 2016-2020 (in Volume)
Table Home Care CAGR by Revenue and Volume, 2016-2020
5.2 Market Forecast
  5.2.1 Hospitals Market Forecast, 2021-2026
Figure Hospitals Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Hospitals Market Estimates and Forecasts, 2021-2026 (in Volume)
Table Hospitals CAGR by Revenue and Volume, 2021-2026
  5.2.2 Aesthetic Clinics Market Forecast, 2021-2026
Figure Aesthetic Clinics Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Aesthetic Clinics Market Estimates and Forecasts, 2021-2026 (in Volume)
Table Aesthetic Clinics CAGR by Revenue and Volume, 2021-2026
  5.2.3 Spas And Salons Market Forecast, 2021-2026
Figure Spas And Salons Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Spas And Salons Market Estimates and Forecasts, 2021-2026 (in Volume)
Table Spas And Salons CAGR by Revenue and Volume, 2021-2026
  5.2.4 Home Care Market Forecast, 2021-2026
Figure Home Care Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Home Care Market Estimates and Forecasts, 2021-2026 (in Volume)
Table Home Care CAGR by Revenue and Volume, 2021-2026

6 MARKET SEGMENTATION BY REGION

6.1 Market Size
  6.1.1 Asia-Pacific
    6.1.1.1 Asia-Pacific Market, 2016-2020
Figure Asia-Pacific Market Size and Growth, 2016-2020 (USD Million)
Figure Asia-Pacific Market Size and Growth, 2016-2020 (in Volume)
Table Asia-Pacific CAGR by Revenue and Volume, 2016-2020
    6.1.1.2 Asia-Pacific Market by Type
Figure Asia-Pacific Market Size by Type
Figure Asia-Pacific Market Share by Type
    6.1.1.3 Asia-Pacific Market by Application
Figure Asia-Pacific Market Size by Application
Figure Asia-Pacific Market Share by Application
  6.1.2 North America
    6.1.2.1 North America Market, 2016-2020
Figure North America Market Size and Growth, 2016-2020 (USD Million)
Figure North America Market Size and Growth, 2016-2020 (in Volume)
Table North America CAGR by Revenue and Volume, 2016-2020
    6.1.2.2 North America Market by Type
Figure North America Market Size by Type
Figure North America Market Share by Type
    6.1.2.3 North America Market by Application
Figure North America Market Size by Application
Figure North America Market Share by Application
  6.1.3 Europe
    6.1.3.1 Europe Market, 2016-2020
Figure Europe Market Size and Growth, 2016-2020 (USD Million)
Figure Europe Market Size and Growth, 2016-2020 (in Volume)
Table Europe CAGR by Revenue and Volume, 2016-2020
    6.1.3.2 Europe Market by Type
Figure Europe Market Size by Type
Figure Europe Market Share by Type
    6.1.3.3 Europe Market by Application
Figure Europe Market Size by Application
Figure Europe Market Share by Application
  6.1.4 South America
    6.1.4.1 South America Market, 2016-2020
Figure South America Market Size and Growth, 2016-2020 (USD Million)
Figure South America Market Size and Growth, 2016-2020 (in Volume)
Table South America CAGR by Revenue and Volume, 2016-2020
    6.1.4.2 South America Market by Type
Figure South America Market Size by Type
Figure South America Market Share by Type
    6.1.4.3 South America Market by Application
Figure South America Market Size by Application
Figure South America Market Share by Application
  6.1.5 Middle East & Africa
    6.1.5.1 Middle East & Africa Market, 2016-2020
Figure Middle East & Africa Market Size and Growth, 2016-2020 (USD Million)
Figure Middle East & Africa Market Size and Growth, 2016-2020 (in Volume)
Table Middle East & Africa CAGR by Revenue and Volume, 2016-2020
    6.1.5.2 Middle East & Africa Market by Type
Figure Middle East & Africa Market Size by Type
Figure Middle East & Africa Market Share by Type
    6.1.5.3 Middle East & Africa Market by Application
Figure Middle East & Africa Market Size by Application
Figure Middle East & Africa Market Share by Application
6.2 Market Forecast
  6.2.1 Asia-Pacific Market Forecast, 2021-2026
Figure Asia-Pacific Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Asia-Pacific Market Estimates and Forecasts, 2021-2026 (in Volume)
Table Asia-Pacific CAGR by Revenue and Volume, 2021-2026
  6.2.2 North America Market Forecast, 2021-2026
Figure North America Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure North America Market Estimates and Forecasts, 2021-2026 (in Volume)
Table North America CAGR by Revenue and Volume, 2021-2026
  6.2.3 Europe Market Forecast, 2021-2026
Figure Europe Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Europe Market Estimates and Forecasts, 2021-2026 (in Volume)
Table Europe CAGR by Revenue and Volume, 2021-2026
  6.2.4 South America Market Forecast, 2021-2026
Figure South America Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure South America Market Estimates and Forecasts, 2021-2026 (in Volume)
Table South America CAGR by Revenue and Volume, 2021-2026
  6.2.5 Middle East & Africa Market Forecast, 2021-2026
Figure Middle East & Africa Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Middle East & Africa Market Estimates and Forecasts, 2021-2026 (in Volume)
Table Middle East & Africa CAGR by Revenue and Volume, 2021-2026

7 MARKET COMPETITIVE

7.1 Global Market by Vendors
Table Global Cavitation Machine Market by Vendors, 2016-2020 (in Volume)
Table Global Cavitation Machine Market Share by Vendors, 2016-2020 (USD Million)
Table Global Cavitation Machine Market Share by Vendors, 2016-2020 (in Volume)
7.2 Market Concentration
Figure Cavitation Machine Market Concentration by Region
7.3 Price & Factors
Table Price Factors List
7.4 Marketing Channel
Figure Marketing Channels Overview

8 MAJOR VENDORS

8.1 Mlay
Table Mlay Profile List
Table Microecological Modulator Operating Data of Mlay (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
8.2 Dermapeel
Table Dermapeel Profile List
Table Microecological Modulator Operating Data of Dermapeel (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
8.3 DFEDCLL
Table DFEDCLL Profile List
Table Microecological Modulator Operating Data of DFEDCLL (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
8.4 Todd
Table Todd Profile List
Table Microecological Modulator Operating Data of Todd (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
8.5 AG Trademark
Table AG Trademark Profile List
Table Microecological Modulator Operating Data of AG Trademark (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
8.6 Nuoxinus
Table Nuoxinus Profile List
Table Microecological Modulator Operating Data of Nuoxinus (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
8.7 Norlanya
Table Norlanya Profile List
Table Microecological Modulator Operating Data of Norlanya (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
8.8 HongTie
Table HongTie Profile List
Table Microecological Modulator Operating Data of HongTie (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
8.9 Ixaer
Table Ixaer Profile List
Table Microecological Modulator Operating Data of Ixaer (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
8.10 Ariana
Table Ariana Profile List
Table Microecological Modulator Operating Data of Ariana (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
8.11 S.K. Enterprises
Table S.K. Enterprises Profile List
Table Microecological Modulator Operating Data of S.K. Enterprises (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
8.12 Perfect Idea Tech
Table Perfect Idea Tech Profile List
Table Microecological Modulator Operating Data of Perfect Idea Tech (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
8.13 Longtree BeautyPro
Table Longtree BeautyPro Profile List
Table Microecological Modulator Operating Data of Longtree BeautyPro (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)

9 CONCLUSION

LIST OF TABLES

Table Product Specifications of Cavitation Machine
Table Products Segment of Cavitation Machine
Table Global Cavitation Machine Market by Type, 2016-2026 (USD Million)
Table Table Model Devices Overview
Table Hand-Held Devices Overview
Table Wearable Overview
Table Application Segment of Cavitation Machine
Table Global Cavitation Machine Market by Application, 2016-2026 (USD Million)
Table Hospitals Overview
Table Aesthetic Clinics Overview
Table Spas And Salons Overview
Table Home Care Overview
Table Global Cavitation Machine Market by Region, 2016-2026 (USD Million)
Table Cost of Cavitation Machine
Table Market Dynamics
Table Policy of Cavitation Machine
Table GDP of Major Countries
Table Technology of Cavitation Machine
Table Market Entry of Cavitation Machine
Table Table Model Devices CAGR by Revenue and Volume, 2016-2020
Table Hand-Held Devices CAGR by Revenue and Volume, 2016-2020
Table Wearable CAGR by Revenue and Volume, 2016-2020
Table Table Model Devices CAGR by Revenue and Volume, 2016-2026
Table Hand-Held Devices CAGR by Revenue and Volume, 2016-2026
Table Wearable CAGR by Revenue and Volume, 2016-2026
Table Hospitals CAGR by Revenue and Volume, 2016-2020
Table Aesthetic Clinics CAGR by Revenue and Volume, 2016-2020
Table Spas And Salons CAGR by Revenue and Volume, 2016-2020
Table Home Care CAGR by Revenue and Volume, 2016-2020
Table Hospitals CAGR by Revenue and Volume, 2021-2026
Table Aesthetic Clinics CAGR by Revenue and Volume, 2021-2026
Table Spas And Salons CAGR by Revenue and Volume, 2021-2026
Table Home Care CAGR by Revenue and Volume, 2021-2026
Table Asia-Pacific CAGR by Revenue and Volume, 2016-2020
Table North America CAGR by Revenue and Volume, 2016-2020
Table Europe CAGR by Revenue and Volume, 2016-2020
Table South America CAGR by Revenue and Volume, 2016-2020
Table Middle East & Africa CAGR by Revenue and Volume, 2016-2020
Table Asia-Pacific CAGR by Revenue and Volume, 2021-2026
Table North America CAGR by Revenue and Volume, 2021-2026
Table Europe CAGR by Revenue and Volume, 2021-2026
Table South America CAGR by Revenue and Volume, 2021-2026
Table Middle East & Africa CAGR by Revenue and Volume, 2021-2026
Table Global Cavitation Machine Market by Vendors, 2016-2020 (in Volume)
Table Global Cavitation Machine Market Share by Vendors, 2016-2020 (USD Million)
Table Global Cavitation Machine Market Share by Vendors, 2016-2020 (in Volume)
Table Price Factors List
Table Mlay Profile List
Table Microecological Modulator Operating Data of Mlay (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
Table Dermapeel Profile List
Table Microecological Modulator Operating Data of Dermapeel (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
Table DFEDCLL Profile List
Table Microecological Modulator Operating Data of DFEDCLL (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
Table Todd Profile List
Table Microecological Modulator Operating Data of Todd (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
Table AG Trademark Profile List
Table Microecological Modulator Operating Data of AG Trademark (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
Table Nuoxinus Profile List
Table Microecological Modulator Operating Data of Nuoxinus (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
Table Norlanya Profile List
Table Microecological Modulator Operating Data of Norlanya (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
Table HongTie Profile List
Table Microecological Modulator Operating Data of HongTie (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
Table Ixaer Profile List
Table Microecological Modulator Operating Data of Ixaer (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
Table Ariana Profile List
Table Microecological Modulator Operating Data of Ariana (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
Table S.K. Enterprises Profile List
Table Microecological Modulator Operating Data of S.K. Enterprises (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
Table Perfect Idea Tech Profile List
Table Microecological Modulator Operating Data of Perfect Idea Tech (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
Table Longtree BeautyPro Profile List
Table Microecological Modulator Operating Data of Longtree BeautyPro (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)


LIST OF FIGURES

Figure Cavitation Machine Picture
Figure Industry Chain Structure of Cavitation Machine
Figure Manufacturing Process of Cavitation Machine
Figure SWOT of Cavitation Machine
Figure Table Model Devices Market Size and Growth, 2016-2020 (USD Million)
Figure Table Model Devices Market Size and Growth, 2016-2020 (in Volume)
Figure Hand-Held Devices Market Size and Growth, 2016-2020 (USD Million)
Figure Hand-Held Devices Market Size and Growth, 2016-2020 (in Volume)
Figure Wearable Market Size and Growth, 2016-2020 (USD Million)
Figure Wearable Market Size and Growth, 2016-2020 (in Volume)
Figure Table Model Devices Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Table Model Devices Market Estimates and Forecasts, 2021-2026 (in Volume)
Figure Hand-Held Devices Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Hand-Held Devices Market Estimates and Forecasts, 2021-2026 (in Volume)
Figure Wearable Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Wearable Market Estimates and Forecasts, 2021-2026 (in Volume)
Figure Hospitals Market Size and Growth, 2016-2020 (USD Million)
Figure Market Size and Growth, 2016-2020 (in Volume)
Figure Aesthetic Clinics Market Size and Growth, 2016-2020 (USD Million)
Figure Market Size and Growth, 2016-2020 (in Volume)
Figure Spas And Salons Market Size and Growth, 2016-2020 (USD Million)
Figure Market Size and Growth, 2016-2020 (in Volume)
Figure Home Care Market Size and Growth, 2016-2020 (USD Million)
Figure Market Size and Growth, 2016-2020 (in Volume)
Figure Hospitals Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Hospitals Market Estimates and Forecasts, 2021-2026 (in Volume)
Figure Aesthetic Clinics Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Aesthetic Clinics Market Estimates and Forecasts, 2021-2026 (in Volume)
Figure Spas And Salons Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Spas And Salons Market Estimates and Forecasts, 2021-2026 (in Volume)
Figure Home Care Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Home Care Market Estimates and Forecasts, 2021-2026 (in Volume)
Figure Asia-Pacific Market Size and Growth, 2016-2020 (USD Million)
Figure Asia-Pacific Market Size and Growth, 2016-2020 (in Volume)
Figure Asia-Pacific Market Size by Type
Figure Asia-Pacific Market Share by Type
Figure Asia-Pacific Market Size by Application
Figure Asia-Pacific Market Share by Application
Figure North America Market Size and Growth, 2016-2020 (USD Million)
Figure North America Market Size and Growth, 2016-2020 (in Volume)
Figure North America Market Size by Type
Figure North America Market Share by Type
Figure North America Market Size by Application
Figure North America Market Share by Application
Figure Europe Market Size and Growth, 2016-2020 (USD Million)
Figure Europe Market Size and Growth, 2016-2020 (in Volume)
Figure Europe Market Size by Type
Figure Europe Market Share by Type
Figure Europe Market Size by Application
Figure Europe Market Share by Application
Figure South America Market Size and Growth, 2016-2020 (USD Million)
Figure South America Market Size and Growth, 2016-2020 (in Volume)
Figure South America Market Size by Type
Figure South America Market Share by Type
Figure South America Market Size by Application
Figure South America Market Share by Application
Figure Middle East & Africa Market Size and Growth, 2016-2020 (USD Million)
Figure Middle East & Africa Market Size and Growth, 2016-2020 (in Volume)
Figure Middle East & Africa Market Size by Type
Figure Middle East & Africa Market Share by Type
Figure Middle East & Africa Market Size by Application
Figure Middle East & Africa Market Share by Application
Figure Asia-Pacific Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Asia-Pacific Market Estimates and Forecasts, 2021-2026 (in Volume)
Figure North America Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure North America Market Estimates and Forecasts, 2021-2026 (in Volume)
Figure Europe Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Europe Market Estimates and Forecasts, 2021-2026 (in Volume)
Figure South America Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure South America Market Estimates and Forecasts, 2021-2026 (in Volume)
Figure Middle East & Africa Market Estimates and Forecasts, 2021-2026 (USD Million)
Figure Middle East & Africa Market Estimates and Forecasts, 2021-2026 (in Volume)
Figure Cavitation Machine Market Concentration by Region
Figure Marketing Channels Overview

More Publications

Need Help?

Ask a Question

Market Reports

All Categories