Global Fire Door Electromagnetic Release Unit Market 2026 by Manufacturers, Regions, Type and Application, Forecast to 2032
1 Market Overview
- 1.1 Product Overview and Scope
- 1.2 Market Estimation Caveats and Base Year
- 1.3 Market Analysis by Type
- 1.3.1 Overview: Global Fire Door Electromagnetic Release Unit Consumption Value by Type: 2021 Versus 2025 Versus 2032
- 1.3.2 Wall-mounted
- 1.3.3 Floor-mounted
- 1.3.4 Top-mounted
- 1.4 Market Analysis by Suction Power
- 1.4.1 Overview: Global Fire Door Electromagnetic Release Unit Consumption Value by Suction Power: 2021 Versus 2025 Versus 2032
- 1.4.2 Low Suction Power (<150N)
- 1.4.3 Standard Suction Power (150–250N)
- 1.4.4 Medium-High Suction Power (300–500N)
- 1.4.5 Heavy-Duty (>500N)
- 1.5 Market Analysis by Application
- 1.5.1 Overview: Global Fire Door Electromagnetic Release Unit Consumption Value by Application: 2021 Versus 2025 Versus 2032
- 1.5.2 Industrial
- 1.5.3 Commercial
- 1.5.4 Residential
- 1.5.5 Others
- 1.6 Global Fire Door Electromagnetic Release Unit Market Size & Forecast
- 1.6.1 Global Fire Door Electromagnetic Release Unit Consumption Value (2021 & 2025 & 2032)
- 1.6.2 Global Fire Door Electromagnetic Release Unit Sales Quantity (2021-2032)
- 1.6.3 Global Fire Door Electromagnetic Release Unit Average Price (2021-2032)
2 Manufacturers Profiles
- 2.1 Geofire
- 2.1.1 Geofire Details
- 2.1.2 Geofire Major Business
- 2.1.3 Geofire Fire Door Electromagnetic Release Unit Product and Services
- 2.1.4 Geofire Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.1.5 Geofire Recent Developments/Updates
- 2.2 Tesa Assa Abloy
- 2.2.1 Tesa Assa Abloy Details
- 2.2.2 Tesa Assa Abloy Major Business
- 2.2.3 Tesa Assa Abloy Fire Door Electromagnetic Release Unit Product and Services
- 2.2.4 Tesa Assa Abloy Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.2.5 Tesa Assa Abloy Recent Developments/Updates
- 2.3 Dormakaba
- 2.3.1 Dormakaba Details
- 2.3.2 Dormakaba Major Business
- 2.3.3 Dormakaba Fire Door Electromagnetic Release Unit Product and Services
- 2.3.4 Dormakaba Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.3.5 Dormakaba Recent Developments/Updates
- 2.4 Ebelco
- 2.4.1 Ebelco Details
- 2.4.2 Ebelco Major Business
- 2.4.3 Ebelco Fire Door Electromagnetic Release Unit Product and Services
- 2.4.4 Ebelco Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.4.5 Ebelco Recent Developments/Updates
- 2.5 Norton Rixson
- 2.5.1 Norton Rixson Details
- 2.5.2 Norton Rixson Major Business
- 2.5.3 Norton Rixson Fire Door Electromagnetic Release Unit Product and Services
- 2.5.4 Norton Rixson Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.5.5 Norton Rixson Recent Developments/Updates
- 2.6 Hochiki
- 2.6.1 Hochiki Details
- 2.6.2 Hochiki Major Business
- 2.6.3 Hochiki Fire Door Electromagnetic Release Unit Product and Services
- 2.6.4 Hochiki Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.6.5 Hochiki Recent Developments/Updates
- 2.7 SARGENT Locks
- 2.7.1 SARGENT Locks Details
- 2.7.2 SARGENT Locks Major Business
- 2.7.3 SARGENT Locks Fire Door Electromagnetic Release Unit Product and Services
- 2.7.4 SARGENT Locks Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.7.5 SARGENT Locks Recent Developments/Updates
- 2.8 Mircom
- 2.8.1 Mircom Details
- 2.8.2 Mircom Major Business
- 2.8.3 Mircom Fire Door Electromagnetic Release Unit Product and Services
- 2.8.4 Mircom Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.8.5 Mircom Recent Developments/Updates
- 2.9 Architectural Builders Hardware Mfg.
- 2.9.1 Architectural Builders Hardware Mfg. Details
- 2.9.2 Architectural Builders Hardware Mfg. Major Business
- 2.9.3 Architectural Builders Hardware Mfg. Fire Door Electromagnetic Release Unit Product and Services
- 2.9.4 Architectural Builders Hardware Mfg. Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.9.5 Architectural Builders Hardware Mfg. Recent Developments/Updates
- 2.10 Pertronic Industries
- 2.10.1 Pertronic Industries Details
- 2.10.2 Pertronic Industries Major Business
- 2.10.3 Pertronic Industries Fire Door Electromagnetic Release Unit Product and Services
- 2.10.4 Pertronic Industries Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.10.5 Pertronic Industries Recent Developments/Updates
- 2.11 Ampac
- 2.11.1 Ampac Details
- 2.11.2 Ampac Major Business
- 2.11.3 Ampac Fire Door Electromagnetic Release Unit Product and Services
- 2.11.4 Ampac Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.11.5 Ampac Recent Developments/Updates
- 2.12 ELFRI S.r.l.
- 2.12.1 ELFRI S.r.l. Details
- 2.12.2 ELFRI S.r.l. Major Business
- 2.12.3 ELFRI S.r.l. Fire Door Electromagnetic Release Unit Product and Services
- 2.12.4 ELFRI S.r.l. Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.12.5 ELFRI S.r.l. Recent Developments/Updates
- 2.13 Freeman & Pardoe
- 2.13.1 Freeman & Pardoe Details
- 2.13.2 Freeman & Pardoe Major Business
- 2.13.3 Freeman & Pardoe Fire Door Electromagnetic Release Unit Product and Services
- 2.13.4 Freeman & Pardoe Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.13.5 Freeman & Pardoe Recent Developments/Updates
- 2.14 Vimpex Ltd
- 2.14.1 Vimpex Ltd Details
- 2.14.2 Vimpex Ltd Major Business
- 2.14.3 Vimpex Ltd Fire Door Electromagnetic Release Unit Product and Services
- 2.14.4 Vimpex Ltd Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.14.5 Vimpex Ltd Recent Developments/Updates
- 2.15 RSG Security
- 2.15.1 RSG Security Details
- 2.15.2 RSG Security Major Business
- 2.15.3 RSG Security Fire Door Electromagnetic Release Unit Product and Services
- 2.15.4 RSG Security Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.15.5 RSG Security Recent Developments/Updates
- 2.16 Briton
- 2.16.1 Briton Details
- 2.16.2 Briton Major Business
- 2.16.3 Briton Fire Door Electromagnetic Release Unit Product and Services
- 2.16.4 Briton Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.16.5 Briton Recent Developments/Updates
- 2.17 Allegion
- 2.17.1 Allegion Details
- 2.17.2 Allegion Major Business
- 2.17.3 Allegion Fire Door Electromagnetic Release Unit Product and Services
- 2.17.4 Allegion Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.17.5 Allegion Recent Developments/Updates
- 2.18 Shenzhen Goldbridge Industrial
- 2.18.1 Shenzhen Goldbridge Industrial Details
- 2.18.2 Shenzhen Goldbridge Industrial Major Business
- 2.18.3 Shenzhen Goldbridge Industrial Fire Door Electromagnetic Release Unit Product and Services
- 2.18.4 Shenzhen Goldbridge Industrial Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.18.5 Shenzhen Goldbridge Industrial Recent Developments/Updates
- 2.19 Jiangsu Sfere Electric
- 2.19.1 Jiangsu Sfere Electric Details
- 2.19.2 Jiangsu Sfere Electric Major Business
- 2.19.3 Jiangsu Sfere Electric Fire Door Electromagnetic Release Unit Product and Services
- 2.19.4 Jiangsu Sfere Electric Fire Door Electromagnetic Release Unit Sales Quantity, Average Price, Revenue, Gross Margin and Market Share (2021-2026)
- 2.19.5 Jiangsu Sfere Electric Recent Developments/Updates
3 Competitive Environment: Fire Door Electromagnetic Release Unit by Manufacturer
- 3.1 Global Fire Door Electromagnetic Release Unit Sales Quantity by Manufacturer (2021-2026)
- 3.2 Global Fire Door Electromagnetic Release Unit Revenue by Manufacturer (2021-2026)
- 3.3 Global Fire Door Electromagnetic Release Unit Average Price by Manufacturer (2021-2026)
- 3.4 Market Share Analysis (2025)
- 3.4.1 Producer Shipments of Fire Door Electromagnetic Release Unit by Manufacturer Revenue ($MM) and Market Share (%): 2025
- 3.4.2 Top 3 Fire Door Electromagnetic Release Unit Manufacturer Market Share in 2025
- 3.4.3 Top 6 Fire Door Electromagnetic Release Unit Manufacturer Market Share in 2025
- 3.5 Fire Door Electromagnetic Release Unit Market: Overall Company Footprint Analysis
- 3.5.1 Fire Door Electromagnetic Release Unit Market: Region Footprint
- 3.5.2 Fire Door Electromagnetic Release Unit Market: Company Product Type Footprint
- 3.5.3 Fire Door Electromagnetic Release Unit Market: Company Product Application Footprint
- 3.6 New Market Entrants and Barriers to Market Entry
- 3.7 Mergers, Acquisition, Agreements, and Collaborations
4 Consumption Analysis by Region
- 4.1 Global Fire Door Electromagnetic Release Unit Market Size by Region
- 4.1.1 Global Fire Door Electromagnetic Release Unit Sales Quantity by Region (2021-2032)
- 4.1.2 Global Fire Door Electromagnetic Release Unit Consumption Value by Region (2021-2032)
- 4.1.3 Global Fire Door Electromagnetic Release Unit Average Price by Region (2021-2032)
- 4.2 North America Fire Door Electromagnetic Release Unit Consumption Value (2021-2032)
- 4.3 Europe Fire Door Electromagnetic Release Unit Consumption Value (2021-2032)
- 4.4 Asia-Pacific Fire Door Electromagnetic Release Unit Consumption Value (2021-2032)
- 4.5 South America Fire Door Electromagnetic Release Unit Consumption Value (2021-2032)
- 4.6 Middle East & Africa Fire Door Electromagnetic Release Unit Consumption Value (2021-2032)
5 Market Segment by Type
- 5.1 Global Fire Door Electromagnetic Release Unit Sales Quantity by Type (2021-2032)
- 5.2 Global Fire Door Electromagnetic Release Unit Consumption Value by Type (2021-2032)
- 5.3 Global Fire Door Electromagnetic Release Unit Average Price by Type (2021-2032)
6 Market Segment by Application
- 6.1 Global Fire Door Electromagnetic Release Unit Sales Quantity by Application (2021-2032)
- 6.2 Global Fire Door Electromagnetic Release Unit Consumption Value by Application (2021-2032)
- 6.3 Global Fire Door Electromagnetic Release Unit Average Price by Application (2021-2032)
7 North America
- 7.1 North America Fire Door Electromagnetic Release Unit Sales Quantity by Type (2021-2032)
- 7.2 North America Fire Door Electromagnetic Release Unit Sales Quantity by Application (2021-2032)
- 7.3 North America Fire Door Electromagnetic Release Unit Market Size by Country
- 7.3.1 North America Fire Door Electromagnetic Release Unit Sales Quantity by Country (2021-2032)
- 7.3.2 North America Fire Door Electromagnetic Release Unit Consumption Value by Country (2021-2032)
- 7.3.3 United States Market Size and Forecast (2021-2032)
- 7.3.4 Canada Market Size and Forecast (2021-2032)
- 7.3.5 Mexico Market Size and Forecast (2021-2032)
8 Europe
- 8.1 Europe Fire Door Electromagnetic Release Unit Sales Quantity by Type (2021-2032)
- 8.2 Europe Fire Door Electromagnetic Release Unit Sales Quantity by Application (2021-2032)
- 8.3 Europe Fire Door Electromagnetic Release Unit Market Size by Country
- 8.3.1 Europe Fire Door Electromagnetic Release Unit Sales Quantity by Country (2021-2032)
- 8.3.2 Europe Fire Door Electromagnetic Release Unit Consumption Value by Country (2021-2032)
- 8.3.3 Germany Market Size and Forecast (2021-2032)
- 8.3.4 France Market Size and Forecast (2021-2032)
- 8.3.5 United Kingdom Market Size and Forecast (2021-2032)
- 8.3.6 Russia Market Size and Forecast (2021-2032)
- 8.3.7 Italy Market Size and Forecast (2021-2032)
9 Asia-Pacific
- 9.1 Asia-Pacific Fire Door Electromagnetic Release Unit Sales Quantity by Type (2021-2032)
- 9.2 Asia-Pacific Fire Door Electromagnetic Release Unit Sales Quantity by Application (2021-2032)
- 9.3 Asia-Pacific Fire Door Electromagnetic Release Unit Market Size by Region
- 9.3.1 Asia-Pacific Fire Door Electromagnetic Release Unit Sales Quantity by Region (2021-2032)
- 9.3.2 Asia-Pacific Fire Door Electromagnetic Release Unit Consumption Value by Region (2021-2032)
- 9.3.3 China Market Size and Forecast (2021-2032)
- 9.3.4 Japan Market Size and Forecast (2021-2032)
- 9.3.5 South Korea Market Size and Forecast (2021-2032)
- 9.3.6 India Market Size and Forecast (2021-2032)
- 9.3.7 Southeast Asia Market Size and Forecast (2021-2032)
- 9.3.8 Australia Market Size and Forecast (2021-2032)
10 South America
- 10.1 South America Fire Door Electromagnetic Release Unit Sales Quantity by Type (2021-2032)
- 10.2 South America Fire Door Electromagnetic Release Unit Sales Quantity by Application (2021-2032)
- 10.3 South America Fire Door Electromagnetic Release Unit Market Size by Country
- 10.3.1 South America Fire Door Electromagnetic Release Unit Sales Quantity by Country (2021-2032)
- 10.3.2 South America Fire Door Electromagnetic Release Unit Consumption Value by Country (2021-2032)
- 10.3.3 Brazil Market Size and Forecast (2021-2032)
- 10.3.4 Argentina Market Size and Forecast (2021-2032)
11 Middle East & Africa
- 11.1 Middle East & Africa Fire Door Electromagnetic Release Unit Sales Quantity by Type (2021-2032)
- 11.2 Middle East & Africa Fire Door Electromagnetic Release Unit Sales Quantity by Application (2021-2032)
- 11.3 Middle East & Africa Fire Door Electromagnetic Release Unit Market Size by Country
- 11.3.1 Middle East & Africa Fire Door Electromagnetic Release Unit Sales Quantity by Country (2021-2032)
- 11.3.2 Middle East & Africa Fire Door Electromagnetic Release Unit Consumption Value by Country (2021-2032)
- 11.3.3 Turkey Market Size and Forecast (2021-2032)
- 11.3.4 Egypt Market Size and Forecast (2021-2032)
- 11.3.5 Saudi Arabia Market Size and Forecast (2021-2032)
- 11.3.6 South Africa Market Size and Forecast (2021-2032)
12 Market Dynamics
- 12.1 Fire Door Electromagnetic Release Unit Market Drivers
- 12.2 Fire Door Electromagnetic Release Unit Market Restraints
- 12.3 Fire Door Electromagnetic Release Unit Trends Analysis
- 12.4 Porters Five Forces Analysis
- 12.4.1 Threat of New Entrants
- 12.4.2 Bargaining Power of Suppliers
- 12.4.3 Bargaining Power of Buyers
- 12.4.4 Threat of Substitutes
- 12.4.5 Competitive Rivalry
13 Raw Material and Industry Chain
- 13.1 Raw Material of Fire Door Electromagnetic Release Unit and Key Manufacturers
- 13.2 Manufacturing Costs Percentage of Fire Door Electromagnetic Release Unit
- 13.3 Fire Door Electromagnetic Release Unit Production Process
- 13.4 Industry Value Chain Analysis
14 Shipments by Distribution Channel
- 14.1 Sales Channel
- 14.1.1 Direct to End-User
- 14.1.2 Distributors
- 14.2 Fire Door Electromagnetic Release Unit Typical Distributors
- 14.3 Fire Door Electromagnetic Release Unit Typical Customers
15 Research Findings and Conclusion
16 Appendix
- 16.1 Methodology
- 16.2 Research Process and Data Source
According to our (Global Info Research) latest study, the global Fire Door Electromagnetic Release Unit market size was valued at US$ 223 million in 2025 and is forecast to a readjusted size of US$ 338 million by 2032 with a CAGR of 6.2% during review period.
In 2025, global production of fire door electromagnetic release units reached 5.16 million units, with an average selling price of $42 per unit. A fire door electromagnetic release unit serves to hold a fire door in the open position during normal operation, thereby facilitating passage in high-traffic environments such as hospitals, office buildings, hotels, and airports. However, should the fire alarm system activate or the power supply be interrupted, the device immediately releases the door; under the action of a door closer, the door automatically shuts, thereby restoring the fire compartmentation and smoke separation barriers. Fire door electromagnetic release units are primarily utilized in fire door systems requiring the functionality of being "held open during normal times, but closed during a fire alarm." Typical application scenarios include hospitals, offices, cinemas, airports, hotels, factories, schools, corridor traffic hubs, and commercial complexes. The upstream segment of the value chain primarily encompasses components such as electromagnetic coils, iron cores/armature plates, die-cast metal or engineering plastic housings, springs and ball-joint adjusters, wiring terminals, power modules, surface coatings, and fasteners. The midstream segment involves the design, assembly, certification, and channel sales of the electromagnetic fire door holder units themselves. The downstream segment connects to fire doors, door closers, fire alarm systems, smoke detection systems, access control/building management systems, and commercial building fire protection engineering projects. Gross margins typically range between approximately 25% and 40%.
This report is a detailed and comprehensive analysis for global Fire Door Electromagnetic Release Unit market. Both quantitative and qualitative analyses are presented by manufacturers, by region & country, by Type and by Application. As the market is constantly changing, this report explores the competition, supply and demand trends, as well as key factors that contribute to its changing demands across many markets. Company profiles and product examples of selected competitors, along with market share estimates of some of the selected leaders for the year 2025, are provided.
Key Features:
Global Fire Door Electromagnetic Release Unit market size and forecasts, in consumption value ($ Million), sales quantity (K Units), and average selling prices (US$/Unit), 2021-2032
Global Fire Door Electromagnetic Release Unit market size and forecasts by region and country, in consumption value ($ Million), sales quantity (K Units), and average selling prices (US$/Unit), 2021-2032
Global Fire Door Electromagnetic Release Unit market size and forecasts, by Type and by Application, in consumption value ($ Million), sales quantity (K Units), and average selling prices (US$/Unit), 2021-2032
Global Fire Door Electromagnetic Release Unit market shares of main players, shipments in revenue ($ Million), sales quantity (K Units), and ASP (US$/Unit), 2021-2026
The Primary Objectives in This Report Are:
To determine the size of the total market opportunity of global and key countries
To assess the growth potential for Fire Door Electromagnetic Release Unit
To forecast future growth in each product and end-use market
To assess competitive factors affecting the marketplace
This report profiles key players in the global Fire Door Electromagnetic Release Unit market based on the following parameters - company overview, sales quantity, revenue, price, gross margin, product portfolio, geographical presence, and key developments. Key companies covered as a part of this study include Geofire, Tesa Assa Abloy, Dormakaba, Ebelco, Norton Rixson, Hochiki, SARGENT Locks, Mircom, Architectural Builders Hardware Mfg., Pertronic Industries, etc.
This report also provides key insights about market drivers, restraints, opportunities, new product launches or approvals.
Market Segmentation
Fire Door Electromagnetic Release Unit market is split by Type and by Application. For the period 2021-2032, the growth among segments provides accurate calculations and forecasts for consumption value by Type, and by Application in terms of volume and value. This analysis can help you expand your business by targeting qualified niche markets.
Market segment by Type
Wall-mounted
Floor-mounted
Top-mounted
Market segment by Suction Power
Low Suction Power (<150N)
Standard Suction Power (150–250N)
Medium-High Suction Power (300–500N)
Heavy-Duty (>500N)
Market segment by Application
Industrial
Commercial
Residential
Others
Major players covered
Geofire
Tesa Assa Abloy
Dormakaba
Ebelco
Norton Rixson
Hochiki
SARGENT Locks
Mircom
Architectural Builders Hardware Mfg.
Pertronic Industries
Ampac
ELFRI S.r.l.
Freeman & Pardoe
Vimpex Ltd
RSG Security
Briton
Allegion
Shenzhen Goldbridge Industrial
Jiangsu Sfere Electric
Market segment by region, regional analysis covers
North America (United States, Canada, and Mexico)
Europe (Germany, France, United Kingdom, Russia, Italy, and Rest of Europe)
Asia-Pacific (China, Japan, Korea, India, Southeast Asia, and Australia)
South America (Brazil, Argentina, Colombia, and Rest of South America)
Middle East & Africa (Saudi Arabia, UAE, Egypt, South Africa, and Rest of Middle East & Africa)
The content of the study subjects, includes a total of 15 chapters:
Chapter 1, to describe Fire Door Electromagnetic Release Unit product scope, market overview, market estimation caveats and base year.
Chapter 2, to profile the top manufacturers of Fire Door Electromagnetic Release Unit, with price, sales quantity, revenue, and global market share of Fire Door Electromagnetic Release Unit from 2021 to 2026.
Chapter 3, the Fire Door Electromagnetic Release Unit competitive situation, sales quantity, revenue, and global market share of top manufacturers are analyzed emphatically by landscape contrast.
Chapter 4, the Fire Door Electromagnetic Release Unit breakdown data are shown at the regional level, to show the sales quantity, consumption value, and growth by regions, from 2021 to 2032.
Chapter 5 and 6, to segment the sales by Type and by Application, with sales market share and growth rate by Type, by Application, from 2021 to 2032.
Chapter 7, 8, 9, 10 and 11, to break the sales data at the country level, with sales quantity, consumption value, and market share for key countries in the world, from 2021 to 2026.and Fire Door Electromagnetic Release Unit market forecast, by regions, by Type, and by Application, with sales and revenue, from 2027 to 2032.
Chapter 12, market dynamics, drivers, restraints, trends, and Porters Five Forces analysis.
Chapter 13, the key raw materials and key suppliers, and industry chain of Fire Door Electromagnetic Release Unit.
Chapter 14 and 15, to describe Fire Door Electromagnetic Release Unit sales channel, distributors, customers, research findings and conclusion.