The report forecast global LED Desk Lamp market to grow to reach xx Million USD in 2021 with a CAGR of xx% during the period of 2021-2026.
Projected and forecast revenue values are in constant U.S. dollars, unadjusted for inflation. Product values and regional markets are estimated by market analyst, data analyst and people from related industry, based on companys' revenue and applications market respectively."
The report demonstrates detail coverage of LED Desk Lamp industry and main market trends.
The data sources include but not limited to reports of companys,international organizations and governments, MMI market surveys,and related industry news.
The market research includes historical and forecast data from like demand, application details, price trends, and company shares of the leading LED Desk Lamp by geography, especially focuses on the key regions like United States, European Union, China, and other regions.
In addition, the report provides insight into main drivers,challenges,opportunities and risk of the market and strategies of suppliers. Key players are profiled as well with their market shares in the global LED Desk Lamp market discussed. Overall, this report covers the historical situation, present status and the future prospects of the global LED Desk Lamp market for 2016-2026.
Moreover,the impact of COVID-19 is also concerned. Since outbreak in December 2019, the COVID-19 virus has spread to over 100 countries and caused huge losses of lives and economy, and the global manufacturing, tourism and financial markets have been hit hard,while the online market increase. Fortunately, with the development of vaccine and other effort by global governments and orgnizations, the nagetive impact of COVID-19 is excepted to subside and the global ecnomy is excepted to recover.
Studying and analyzing the impact of Coronavirus COVID-19 on the LED Desk Lamp industry, the report provide in-depth analysis and professtional advices on how to face the post COIVD-19 period.
Market Segment by Product Type
Wired
Wireless
Market Segment by Product Application
Home
Commercial
Others
Finally, the report provides detailed profile and data information analysis of leading company.
Philips
OSRAM
Cree
Panasonic
Toshiba
MaxLite
Brightech
Tomons
PHIVE
Lumiy
BenQ
Newhouse Lighting
Koncept Inc
Sunllipe
Etekcity
Report Includes:
- xx data tables (appendix tables)
- Overview of global LED Desk Lamp market
- An detailed key players analysis across regions
- Analyses of global market trends, with historical data, estimates for 2021 and projections of compound annual growth rates (CAGRs) through 2026
- Insights into regulatory and environmental developments
- Information on the supply and demand scenario and evaluation of technological and investment opportunities in the LED Desk Lamp market
- Profiles of major players in the industry, including Philips, OSRAM, Cree, Panasonic, Toshiba..
Research Objectives
1.To study and analyze the global LED Desk Lamp consumption (value & volume) by key regions/countries, product type and application, history data from 2016 to 2020, and forecast to 2026.
2.To understand the structure of LED Desk Lamp market by identifying its various subsegments.
3.Focuses on the key global LED Desk Lamp manufacturers, to define, describe and analyze the sales volume, value, market share, market competition landscape, Porter's five forces analysis, SWOT analysis and development plans in next few years.
4.To analyze the LED Desk Lamp with respect to individual growth trends, future prospects, and their contribution to the total market.
5.To share detailed information about the key factors influencing the growth of the market (growth potential, opportunities, drivers, industry-specific challenges and risks).
6.To project the consumption of LED Desk Lamp submarkets, with respect to key regions (along with their respective key countries).
7.To analyze competitive developments such as expansions, agreements, new product launches, and acquisitions in the market.
8.To strategically profile the key players and comprehensively analyze their growth strategies.
Table of Contents
Global LED Desk Lamp Market Research Report 2021, Forecast to 2026
1 Market Study Overview
1.1 Study Objectives
1.2 LED Desk Lamp Introduce
1.3 Combined with the Analysis of Macroeconomic Indicators
1.4 Brief Description of Research methods
1.5 Market Breakdown and Data Triangulation
2 Global Trend Summary
2.1 LED Desk Lamp Segment by Type
2.1.1 Wired
2.1.2 Wireless
2.2 Market Analysis by Application
2.2.1 Home
2.2.2 Commercial
2.2.3 Others
2.3 Global LED Desk Lamp Market Comparison by Regions (2016-2026)
2.3.1 Global LED Desk Lamp Market Size (2016-2026)
2.3.2 North America LED Desk Lamp Status and Prospect (2016-2026)
2.3.3 Europe LED Desk Lamp Status and Prospect (2016-2026)
2.3.4 China LED Desk Lamp Status and Prospect (2016-2026)
2.3.5 Japan LED Desk Lamp Status and Prospect (2016-2026)
2.3.6 Southeast Asia LED Desk Lamp Status and Prospect (2016-2026)
2.4 Basic Product Information
2.4.1 Basic Product Information & Technology Development History
2.4.2 Product Manufacturing Process
2.4.3 Interview with Major Market Participants
2.4.4 High-end Market Analysis and Forecast
2.5 Coronavirus Disease 2019 (Covid-19): LED Desk Lamp Industry Impact
2.5.1 LED Desk Lamp Business Impact Assessment - Covid-19
2.5.2 Market Trends and LED Desk Lamp Potential Opportunities in the COVID-19 Landscape
2.5.3 Measures / Proposal against Covid-19
3 Competition by Manufacturer
3.1 Global LED Desk Lamp Sales and Market Share by Manufacturer (2016-2021)
3.2 Global LED Desk Lamp Revenue and Market Share by Manufacturer (2016-2021)
3.3 Global LED Desk Lamp Industry Concentration Ratio (CR5 and HHI)
3.4 Top 5 LED Desk Lamp Manufacturer Market Share
3.5 Top 10 LED Desk Lamp Manufacturer Market Share
3.6 Date of Key Manufacturers Enter into LED Desk Lamp Market
3.7 Key Manufacturers LED Desk Lamp Key Manufacturers
3.8 Mergers & Acquisitions Planning
4 Analysis of LED Desk Lamp Industry Key Manufacturers
4.1 Philips
4.1.1 Compan Detail
4.1.2 Philips LED Desk Lamp Product Introduction, Application and Specification
4.1.3 Philips 158 Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.1.4 Main Business Overview
4.1.5 Philips News
4.2 OSRAM
4.2.1 Compan Detail
4.2.2 OSRAM LED Desk Lamp Product Introduction, Application and Specification
4.2.3 OSRAM LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.2.4 Main Business Overview
4.2.5 Philips News
4.3 Cree
4.3.1 Compan Detail
4.3.2 Cree LED Desk Lamp Product Introduction, Application and Specification
4.3.3 Cree LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.3.4 Main Business Overview
4.3.5 Cree News
4.4 Panasonic
4.4.1 Compan Detail
4.4.2 Panasonic LED Desk Lamp Product Introduction, Application and Specification
4.4.3 Panasonic LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.4.4 Main Business Overview
4.4.5 Panasonic News
4.5 Toshiba
4.5.1 Compan Detail
4.5.2 Panasonic LED Desk Lamp Product Introduction, Application and Specification
4.5.3 Toshiba LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.5.4 Main Business Overview
4.5.5 Toshiba News
4.6 MaxLite
4.6.1 Compan Detail
4.6.2 MaxLite LED Desk Lamp Product Introduction, Application and Specification
4.6.3 MaxLite LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.6.4 Main Business Overview
4.6.5 MaxLite News
4.7 Brightech
4.7.1 Compan Detail
4.7.2 Brightech LED Desk Lamp Product Introduction, Application and Specification
4.7.3 Brightech LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.7.4 Main Business Overview
4.7.4 Main Business Overview
4.8 Tomons
4.8.1 Compan Detail
4.8.2 Tomons LED Desk Lamp Product Introduction, Application and Specification
4.8.3 Tomons LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.8.4 Main Business Overview
4.8.5 Tomons News
4.9 PHIVE
4.9.1 Compan Detail
4.9.2 PHIVE LED Desk Lamp Product Introduction, Application and Specification
4.9.3 PHIVE LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.9.4 Main Business Overview
4.9.5 PHIVE News
4.10 Lumiy
4.10.1 Compan Detail
4.10.2 Lumiy LED Desk Lamp Product Introduction, Application and Specification
4.10.3 Lumiy LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.10.4 Main Business Overview
4.10.5 Lumiy News
4.11 BenQ
4.11.1 Compan Detail
4.11.2 BenQ LED Desk Lamp Product Introduction, Application and Specification
4.11.3 BenQ LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.11.4 Main Business Overview
4.11.5 BenQ News
4.12 Newhouse Lighting
4.12.1 Compan Detail
4.12.2 Newhouse Lighting LED Desk Lamp Product Introduction, Application and Specification
4.12.3 Newhouse Lighting LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.12.4 Main Business Overview
4.12.5 Newhouse Lighting News
4.13 Koncept Inc
4.13.1 Company Details
4.13.2 Koncept Inc LED Desk Lamp Product Introduction, Application and Specification
4.13.3 Koncept Inc LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.13.4 Main Business Overview
4.13.5 Koncept Inc News
4.14 Sunllipe
4.14.1 Compan Detail
4.14.2 Sunllipe LED Desk Lamp Product Introduction, Application and Specification
4.14.3 Sunllipe LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.14.4 Main Business Overview
4.14.5 Sunllipe News
4.15 Etekcity
4.15.1 Compan Detail
4.15.2 Etekcity LED Desk Lamp Product Introduction, Application and Specification
4.15.3 Etekcity LED Desk Lamp Sales, Price, Cost, Gross Margin, and Revenue (2016-2021)
4.15.4 Main Business Overview
4.15.5 Etekcity News
5 Global LED Desk Lamp Market Segment by Big Type
5.1 Global LED Desk Lamp Revenue, Sales and Market Share by Big Type (2016-2021)
5.1.1 Global LED Desk Lamp Sales and Market Share by Big Type (2016-2021)
5.1.2 Global LED Desk Lamp Revenue and Market Share by Big Type (2016-2021)
5.2 Wired Sales Growth Rate and Price
5.2.1 Global Wired Sales Growth Rate (2016-2021)
5.2.2 Global Wired Price (2016-2021)
5.3 Wireless Sales Growth Rate and Price
5.3.1 Global Wireless Sales Growth Rate (2016-2021)
5.3.2 Global Wireless Price (2016-2021)
6 Global LED Desk Lamp Market Segment by Big Application
6.1 Global LED Desk Lamp Sales Market Share by Big Application (2016-2021)
6.2 Home Sales Growth Rate (2016-2021)
6.3 Commercial Sales Growth Rate (2016-2021)
6.4 Others Sales Growth Rate (2016-2021)
7 Global LED Desk Lamp Forecast
7.1 Global LED Desk Lamp Revenue, Sales and Growth Rate (2021-2026)
7.2 LED Desk Lamp Market Forecast by Regions (2021-2026)
7.2.1 North America LED Desk Lamp Market Forecast (2021-2026)
7.2.2 Europe LED Desk Lamp Market Forecast (2021-2026)
7.2.3 China LED Desk Lamp Market Forecast (2021-2026)
7.2.4 Japan LED Desk Lamp Market Forecast (2021-2026)
7.2.5 Southeast Asia LED Desk Lamp Market Forecast (2021-2026)
7.2.6 Other Regions LED Desk Lamp Market Forecast (2021-2026)
7.3 LED Desk Lamp Market Forecast by Type (2021-2026)
7.3.1 Global LED Desk Lamp Sales Forecast by Type (2021-2026)
7.3.2 Global LED Desk Lamp Market Share Forecast by Type (2021-2026)
7.4 LED Desk Lamp Market Forecast by Application (2021-2026)
7.4.1 Global LED Desk Lamp Sales Forecast by Application (2021-2026)
7.4.2 Global LED Desk Lamp Market Share Forecast by Application (2021-2026)
8 Market Analysis
8.1.1 Market Overview
8.1.2 Market Opportunities
8.1.3 Market Risk
8.1.4 Market Driving Force
8.1.5 Porter's Five Forces Analysis
8.1.6 SWOT Analysis
9 LED Desk Lamp Related Market Analysis
9.1 Upstream Analysis
9.1.1 Macro Analysis of Upstream Markets
9.1.2 Key Players in Upstream Markets
9.1.3 Upstream Market Trend Analysis
9.1.4 LED Desk Lamp Manufacturing Cost Analysis
9.2 Downstream Market Analysis
9.2.1 Macro Analysis of Down Markets
9.2.2 Key Players in Down Markets
9.2.3 Downstream Market Trend Analysis
9.2.4 Sales Channel, Distributors, Traders and Dealers
10 Research Findings and Conclusion
List of Tables and Figures
Figure Product Picture LED Desk Lamp
Figure Market Concentration Ratio and Market Maturity Analysis of LED Desk Lamp
Figure Bottom-up and Top-down Approaches for This Report
Figure Part of Our External Database
Figure Part of Our External Database
Figure Key Executives Interviewed
Table Global LED Desk Lamp Market Size by Big Type
Figure Global Market Share of LED Desk Lamp by Big Type in 2020
Figure Wired Picture (2016-2021)
Global LED Desk Lamp Market Size by Big Application
Table Global LED Desk Lamp Market Size by Application
Figure Global LED Desk Lamp Market Share by Big Application in 2020
Figure Home Picture
Figure Commercial Picture
Figure Others Picture
Table Global LED Desk Lamp Comparison by Regions (M USD) ?2016-2026?
Figure Global LED Desk Lamp Market Size (Million US$) (2016-2026)
Figure North America LED Desk Lamp Revenue (Million US$) Growth Rate (2016-2026)
Figure Europe LED Desk Lamp Revenue (Million US$) Growth Rate (2016-2026)
Figure China LED Desk Lamp Revenue (Million US$) Growth Rate (2016-2026)
Figure Japan LED Desk Lamp Revenue (Million US$) Growth Rate (2016-2026)
Figure Southeast Asia LED Desk Lamp Revenue (Million US$) Growth Rate (2016-2026)
Table Business Impact Assessment - Covid-19
Table Market Trends and LED Desk Lamp Potential Opportunities in the COVID-19 Landscape
Table Measures / Proposal against Covid-19
Table Global LED Desk Lamp Sales by Manufacturer (2016-2021)
Figure Global LED Desk Lamp Sales Market Share by Manufacturer in 2020
Table Global LED Desk Lamp Revenue by Manufacturer (2016-2021)
Figure Global LED Desk Lamp Revenue Market Share by Manufacturer in 2020
Table Global LED Desk Lamp Manufacturers Market Concentration Ratio (CR5 and HHI)
Figure Top 5 LED Desk Lamp Manufacturer (Revenue) Market Share in 2020
Figure Top 10 LED Desk Lamp Manufacturer (Revenue) Market Share in 2020
Table Date of Key Manufacturers Enter into LED Desk Lamp Market
Table Key Manufacturers LED Desk Lamp Product Type
Table Mergers & Acquisitions Planning
Table Philips Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of Philips
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company One 2016-2021
Table Company One Main Business
Table Company One Recent Development
Table OSRAM Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of OSRAM
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company Two 2016-2021
Table OSRAM Recent Development
Table Cree Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of Cree
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company Two 2016-2021
Table Cree Main Business
Table Cree Recent Development
Table Panasonic Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of Panasonic
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company Two 2016-2021
Table Panasonic Main Business
Table Panasonic Recent Development
Table Panasonic Main Business
Table Panasonic Recent Development
Table Toshiba Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of Toshiba
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company Two 2016-2021
Table Toshiba Main Business
Table Toshiba Recent Development
Table MaxLite Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of MaxLite
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company Two 2016-2021
Table MaxLite Main Business
Table MaxLite Recent Development
Table Brightech Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of Brightech
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company Two 2016-2021
Table Brightech Main Business
Table Brightech Recent Development
Table Tomons Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of Tomons
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company Two 2016-2021
Table Tomons Main Business
Table Tomons Recent Development
Table PHIVE Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of PHIVE
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company Two 2016-2021
Table PHIVE Main Business
Table PHIVE Recent Development
Table Lumiy Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of Lumiy
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company Two 2016-2021
Table Lumiy Main Business
Table Lumiy Recent Development
Table BenQ Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of BenQ
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company Two 2016-2021
Table BenQ Main Business
Table BenQ Recent Development
Table Newhouse Lighting Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of Newhouse Lighting
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company Two 2016-2021
Table Newhouse Lighting Main Business
Table Newhouse Lighting Recent Development
Table Koncept Inc Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of Koncept Inc
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company Two 2016-2021
Table Koncept Inc Main Business
Table Koncept Inc Recent Development
Table Sunllipe Company Profile
Table LED Desk Lamp Product Introduction, Application and Specification of Sunllipe
Table LED Desk Lamp Sales (K Unit), Price (USD/Unit), Revenue (M USD) and Gross Margin of Company Two 2016-2021
Table Sunllipe Main Business
Table Sunllipe Recent Development
Figure Global LED Desk Lamp Sales and Growth Rate (2016-2021)
Figure Global LED Desk Lamp Revenue and Growth Rate (2016-2021)
Table Global LED Desk Lamp Sales by Regions (2016-2021)
Figure Global LED Desk Lamp Sales Market Share by Regions in 2020
Table Global LED Desk Lamp Revenue by Regions (2016-2021)
Figure Global LED Desk Lamp Revenue Market Share by Regions in 2020
Figure North America LED Desk Lamp Sales and Growth Rate (2016-2021)
Figure Europe LED Desk Lamp Sales and Growth Rate (2016-2021)
Figure China LED Desk Lamp Sales and Growth Rate (2016-2021)
Figure Japan LED Desk Lamp Sales and Growth Rate (2016-2021)
Figure Southeast Asia LED Desk Lamp Sales and Growth Rate (2016-2021)
Figure Other Regions LED Desk Lamp Sales and Growth Rate (2016-2021)
Table Global LED Desk Lamp Sales by Big Type (2016-2021)
Table Global LED Desk Lamp Sales Market Share by Big Type (2016-2021)
Figure Global LED Desk Lamp Sales Market Share by Big Type in 2019
Table Global LED Desk Lamp Revenue by Big Type (2016-2021)
Table Global LED Desk Lamp Revenue Market Share by Big Type (2016-2021)
Table Global LED Desk Lamp Revenue Market Share by Big Type in 2019
Figure Global Wired Sales Growth Rate (2016-2021)
Figure Global Wired Price (2016-2021)
Figure Global Wireless Sales Growth Rate (2016-2021)
Table Global LED Desk Lamp Sales by Big Application (2016-2021)
Table Global LED Desk Lamp Sales Market Share by Big Application (2016-2021)
Figure Global LED Desk Lamp Sales Market Share by Big Application in 2019
Figure Global Home Sales Growth Rate (2016-2021)
Figure Global Commercial Sales Growth Rate (2016-2021)
Figure Global Others Sales Growth Rate (2016-2021)
Figure Global LED Desk Lamp Sales and Growth Rate (2021-2026)
Figure Global LED Desk Lamp Revenue and Growth Rate (2021-2026)
Table Global LED Desk Lamp Sales Forecast by Regions (2021-2026)
Table Global LED Desk Lamp Market Share Forecast by Regions (2021-2026)
Figure North America Sales LED Desk Lamp Market Forecast (2021-2026)
Figure Europe Sales LED Desk Lamp Market Forecast (2021-2026)
Figure China Sales LED Desk Lamp Market Forecast (2021-2026)
Figure Japan Sales LED Desk Lamp Market Forecast (2021-2026)
Figure Southeast Asia Sales LED Desk Lamp Market Forecast (2021-2026)
Figure Other Regions Sales LED Desk Lamp Market Forecast (2021-2026)
Table Global LED Desk Lamp Sales Forecast by Type (2021-2026)
Table Global LED Desk Lamp Market Share Forecast by Type (2021-2026)
Table Global LED Desk Lamp Sales Forecast by Application (2021-2026)
Table Global LED Desk Lamp Market Share Forecast by Application (2021-2026)
Table Market Opportunities in Next Few Years
Table Market Risks Analysis
Table Market Drivers
Figure Porter's Five Forces Analysis
Table Macro Analysis of Upstream Markets
Table Key Players in Upstream Markets
Table Key Players of Upstream Markets
Table Key Raw Materials
Figure Price Trend of Key Raw Materials
Table Key Suppliers of Raw Materials
Figure Manufacturing Cost Structure of LED Desk Lamp
Table Macro Analysis of Down Markets
Table Key Players in Down Markets
Table Key Players of Downstream Markets
Figure Sales Channel
Figure North America LED Desk Lamp Sales (K Units) Growth Rate Forecast (2020-2025)
Figure North America LED Desk Lamp Revenue (Million US$) Growth Rate Forecast (2020-2025)
Figure Europe LED Desk Lamp Sales (K Units) Growth Rate Forecast (2020-2025)
Figure Europe LED Desk Lamp Revenue (Million US$) Growth Rate Forecast (2020-2025)
Figure Japan LED Desk Lamp Production (K Units) Growth Rate Forecast (2020-2025)
Figure Japan LED Desk Lamp Revenue (Million US$) Growth Rate Forecast (2020-2025)
Figure China LED Desk Lamp Production (K Units) Growth Rate Forecast (2020-2025)
Figure China LED Desk Lamp Revenue (Million US$) Growth Rate Forecast (2020-2025)
Figure Methodology/Research Approach
Figure Market Size Estimation
Figure Author List
Philips
OSRAM
Cree
Panasonic
Toshiba
MaxLite
Brightech
Tomons
PHIVE
Lumiy
BenQ
Newhouse Lighting
Koncept Inc