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The company’s 30000 sqm new production base locates in the Zhangzhou LanTian Economic
Development (Guo Keng) Zone ---- a provincial development zone of Fujian. Production development
combining with manufacture makes the company becoming a technical enterprise. It’s now the largest
production base specialized on heat insulation & anti-corrosion aluminum steel plate manufacture in
China with over ¥ 100 million funds in assets
Introduction
of Our New
Production
Base
Introduction of the Composite Structure
Appearance of the Nano Steel-Al Composite Panel
1.Embossed Pattern Treatment:
Add emboss patten on the top coating film surface to minimize light
pollution caused by reflection
2.Edge Sealing Treatment:
Nano PET film wrapped on both long sides of the sheet to form
closed edges for better anti-corrosion protection.
Advantages of the Nano Steel-Al Composite Panel
in comparison to the Normal Pre-painted Galvanized Steel Sheet
1.Good Performance on Anti-corrosion
Appearance after dipping both
XHH Nano Steel-Al Composite Panel and PPGI
into aqua regia for 30 minutes
*Aqua regia: mixed solution of 36% hydrochloric acid(HCL)Land 68% nitric acid((HNO3)
in the ratio of 3:1
2.Good Capacity on (UV reflective) Heat Insulation
20+℃ difference on panel surface temperature
able to lower the indoor temperature by6℃~ 8℃
comparing to PPGI in summer time
Test Report of National Center for
Quality Supervision and Test of Building Engineering
Testing Conclusion: Qualified to the Requirements of Specification on Quality according to the National Standard
GB/T 23443-2009《Aluminum Panels for Building Decoration》
JG/T 402-2013 《Roofing Products from Metal Sheet with Reflect Thermal Coating》
Test Report of Salt Spray Test
By National Test Center of Polymer & Building Material
Test Conclusion:No visible rust can be found after testing for 500 hours
Test Report of Fire Resistance Capacity Test
By Fujian Inspection and Research Institute for Product Quality
Testing Conclusion: Qualified to the Requirements of A1 Class Incombustibility according to the National Standard
GB8624-2012《Classification for burning behavior of building materials and products》
Test Report On
The UV Insulation Capacity
Of The Top Coating Film
Testing Result:
UV Reflectivity: 80.9%
UV Absorptivity: 19%
UV Penetration Rate:0.1%
In addition to the certificates
we have got from nation run
and some professional test
centers, we have also
established our own test
laboratory equipped with
kinds of testing facilities:
1.UV accelerated aging test
machine
2.Humidity test chamber
3.Thermal insulation test box
4.Tensile test machine
5.Salt spray test machine
6.Cupping test machine
鑫
川
a
一
Conclusions of the Quality Tests
carried out by the lab of our factory
1.Peeling Strength Test
A forces of 85N/25.4mm(8.63kgf))is needed to peel off the composite coating
layers: Nano PET film & Aluminum foil)from the surface of the base GI sheet.
2.Cupping Test
Cupping test value:6mm
No penetrating crack was found on surface coating film.
3.Salt Spray Test
Test Span:over 1000 hours
No shedding or bubbling phenomena was found on surface coatings film.
4.Elongation at Break
≥139%
5.UV Anti-aging Test
Test Span:over 5000 hours
6.Color Fading Test
Test Span:over 1800 hours
7.High Temperature Test
Stay good in temperature range from -30℃ to 120℃
XHH Nano Steel-Al Composite Panel
(Poultry Livestock Farming Industry Specified)
China is one of the earliest countries in the world to start poultry & livestock husbandry.
With the rapid development of animal husbandry in China, especially the rapid
development of large-scale and intensive commercial farming, the scale of animal
husbandry and the output value increases at an annual rate of more than 10%.
The establishment of intensive factory farms is an important way to adjust the industrial
structure and increase income,,but it also faces serious pollution prevention and control
problem.
The pollution of animal husbandry mainly refers to the production of feces from
livestock and waste from livestock and poultry farms in the livestock production
process.
While the most important pollution is from the feces of livestock and poultry. Livestock
and poultry feces is not only harmful to the air, water, and human body, but also causes
corrosion to the color steel plates and purlins of the farm building.
According to relevant experts, a chicken produces 100g of feces every day, and
about 36kg of feces every year. An industrial chicken farm that feeds 10,000 chickens
will produce 1 ton of chicken feces per day, and about 360 tons of chicken feces every
year; A pig produces 6kg of feces per day,and about 2 tons of feces every year. An
industrial pig farm that feeds 1000 pigs will produce 6 ton of pig feces per day, and
about 2000 tons of chicken feces every year;
Feces Chemical Composition of Common livestock and poultry (%)
Water Organic matter (N) P2O5 K2O
Pig Feces 72.4 25.0 0.45 0.19 0.60
Cow Feces 77.5 20.3 0.34 0.16 0.40
Horse Feces 71.3 25.4 0.58 0.28 0.53
Sheep Feces 64.6 31.8 0.83 0.23 0.67
Chick Feces 50.5 25.5 1.63 1.54 0.85
Duck Feces 56.6 26.2 1.10 1.40 0.62
Goose Feces 77.1 23.4 0.55 0.50 0.95
Pigeon Feces 51.0 30.8 1.76 1.78 1.00
Concentration of Common Livestock & Poultry Feces Pollutants(kg/t)
CODcr BOD5 NH3-N TP TN
Cow Feces 31.0 24.5 1.7 1.2 4.4
Cow Urine 6.0 4.0 3.5 0.4 8.0
Pig Feces 52.0 57.0 3.1 3.4 5.9
Pig Urine 9.0 5.0 1.4 0.5 3.3
Chick Feces 45.0 47.9 4.8 5.4 9.8
Duck Feces 46.3 30.0 0.8 6.2 11.0
*Data provided by the State Environmental Protection Administration
The above two charts show that livestock feces contains chemical components such
as nitrogen (N), phosphorus (P), potassium (K), and ammonia nitrogen (NH3-N),
while the odor emitted from feces mainly contains hydrogen sulfide (H2S). And
ammonia (NH3), two corrosive gases. Among them, hydrogen sulfide and ammonia
cause the most serious corrosion to the color steel plates and purlins.
H2S:
H2S is an inorganic compound, which is normally a colorless, flammable acid gas. When
the concentration is low, it is malodorous and the smell is rotten. At room temperature
and pressure, dry H2S will not cause corrosion to metals, but when it dissolves in water,
a wet H2S environment will be formed.
Wet H2S reacts electrochemically on the metal surface, causing corrosion pits, spots,
and large areas to fall off on the metal surface, so there will be perforation on the color
steel plates and purlins ,and make them weaken or even crack.
NH3:
NH3 is a colorless gas with a strong pungent odor. NH3 can be ionized into NH4+ and OH-
to form an electrolyte solution in a humid environment, and promote the metal galvanic
reaction to accelerate metal corrosion. Although corrosiveness is not very strong, but
under such circumstances for a long time, the surface of color steel plates and purlins
slowly blisters, falls off and eventually rusts.
To protect the corrosion to color steel plates from these pollution sources, the Xinhonghua
Company has developed this Poultry & Livestock. Specified Nano Steel-Al Composite
Panel product. This product adopts advanced composite technology, covering PET
(polyethylene terephthalate) on the upper and lower sides of the color steel plate (upper:
heat insulation + corrosion protection; lower: corrosion protection).
Compared with ordinary color steel plate, the add-on protective films on both sides of the
panel well protects the inside color steel plate from the direct eroding of corrosive gas,
liquid being , so as to increase the service life,and reduce labor, material costs.
The advantages of PET:
1.Good mechanical properties, impact strength is 3-5 times that of other films, exellent
folding durability.
①Tensile Strength Vertical 210MPa Horizontal 210MPa.②Elongation at break Vertical 130%;
Horizontal 130%.
③Thermal expansion rate 1.5%(150℃,30min)
2.High transparency, ultraviolet insulated, good gloss.
①Transmittance 91%。②UV insulated rate:99%。③Gloss rate:180%。
3.Low permeability against gas and water vapor
4.resistant to most solvents,such as oil, fat, dilute acid, dilute alkali... and etc.
5.With excellent high and low temperature performance, it can be used in the temperature
range from 0℃ to 120°C for a long time. It can withstand 150°C high temperature and -70°
C low temperature in short-term use, and its mechanical performance remains good when
it is high or low temperature.
Comparison after Testing for 240 Hours under Salt Spray Evironment
XHH Nano Steel-Al
Composite Panel
(Poultry & Livestock Farm
Industry Specified)
Korean Brand Normal
Pre-painted Galvanized
Steel Sheet.
Comparison after dipped in aqua regia for 20 minutes
Aqua Regia(mixed solution of HCI & HNO₃ in volume ratio of 3:1)
XHH Nano Steel-Al
Composite Panel
(Poultry & Livestock Farm
Industry Specified)
Korean Brand Normal
Pre-painted Galvanized
Steel Sheet.
Comparison after dipped in aqua regia for 30 minutes
Aqua Regia(mixed solution of HCI & HNO₃ in volume ratio of 3:1)
XHH Nano Steel-Al
Composite Panel
(Poultry & Livestock Farm
Industry Specified)
Korean Brand Normal
Pre-painted Galvanized
Steel Sheet.
Through the comparison of the above several experiments, we can see that XHH Nano
Steel-Al Composite Panel (Poultry & Livestock Farm Industry Specified) is far better than
the color steel plate in corrosion resistance. Because the PET film has good acid and
alkali resistance capacity, high water and oxygen blocking rate. It will play an important
protective role in blocking the pollutants from eroding the inside base GI sheet.
XHH Panel
Normal PPGI
XHH Panel
XHH Panel
XHH Panel
Normal PPGI
Domestic Sample Project Finished in 2014:Dongshan Poultry Marketplace
XHH Nano Steel-Al Composite Panel
(Ceramic Industry Specified)
China is known as the “kingdom of ceramics” and is the largest producer of ceramics in the world
and a major exporter of ceramics. At present, there are nearly 3,000 architectural ceramics
factories, more than 8,000 daily-use ceramics factories, more than 1,000 sanitary ceramics
factories, and a considerable number of ceramic workshops in China. There are tens of
thousands of large and small kilns, consuming 40 million to 50 million tons of standard coal
every year.
A large amount of exhaust gas produced in the production process can not be effectively treated
and is discharged directly into the air. The exhaust gas not only pollutes the environment, but
also causes corrosion to the color steel plates and purlins of the ceramic plant.
The pollutants in the exhaust gas of the ceramic industry can be devided into common
pollutants and specific pollutants.
Common pollutants includes: carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen
oxides (NOX), particulates, and etc.,
Specific pollutants includes: lead, cadmium, nickel, chlorides, fluorides, and etc.,
Among all pollutants,the common pollutants (SO2, NOX) have the most obvious
pollution to color steel plates.
The pollutants usually produce pungent odors in darker colors during the discharge
process;
SO2:
The SO2 in the waste gas of the ceramic industry mainly generated by the sulfur in fuels (coal,
heavy oil, etc.) and sulfur in ceramic raw materials. At high temperature, a portion of the sulfur
from the ceramic raw material forms SOX (sulfide) into the furnace flue gas. Sulfur dioxide is a
colorless, highly irritating toxic gas.
When sulfur dioxide is dissolved in water, sulfurous acid H2SO3(the main component of acid
rain) is formed. If there is a catalyst such as nitrogen dioxide (NO2), the sulfur dioxide will be
further oxidized, and sulfuric acid (H2SO4) will be generated. Sulfuric acid is the most active
binary inorganic strong acid that reacts with many metals. It will corrode the paint and cause
the steel plate to rust and perforate.
Comparison after dipped in aqua regia for 30 minutes
Aqua Regia(mixed solution of HCI & HNO₃ in the ratio of 3:1)
XHH Nano Steel-Al
Composite Panel
Ceramic Industry Specified
Normal Pre-painted
Galvanized Steel Sheet.
NOX:
NOX has three sources: rapid NOX, thermal NOX, and fuel NOX. rapid NOX generally
accounts for 5% of the total; The generation of fuel NOX is closely related to the nitrogen
content of the fuel; thermal NOX is mainly generated during fuel combustion.
Nitrogen oxides as air pollutants often refer to nitric oxide (NO) and nitrogen dioxide (NO2).
The chemical nature of nitric oxide is very lively. When it reacts with oxygen, it can form
corrosive nitrogen dioxide. Nitrogen dioxide dissolves in water and reacts with water to
produce nitric acid (HNO3).
Nitric acid is a kind of strong acid with strong oxidizing and corrosive properties. It erodes
the paint and zinc layer of the color steel plate, destroys the color steel plate, and reduces
the service life.
Comparison after dipped in HNO3 (nitric acid) for 5 minutes
XHH Nano Steel-Al
Composite Panel
(Ceramic Industry Specified)In
Normal Pre-painted
Galvanized Steel Sheet.
Domestic Sample Project: Zhangzhou Ceramic Factory
Photos were taken two years after finished

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High Anti-corrosion Capacity Composite Metal Sheet Product

  • 1. The company’s 30000 sqm new production base locates in the Zhangzhou LanTian Economic Development (Guo Keng) Zone ---- a provincial development zone of Fujian. Production development combining with manufacture makes the company becoming a technical enterprise. It’s now the largest production base specialized on heat insulation & anti-corrosion aluminum steel plate manufacture in China with over ¥ 100 million funds in assets Introduction of Our New Production Base
  • 2. Introduction of the Composite Structure
  • 3. Appearance of the Nano Steel-Al Composite Panel 1.Embossed Pattern Treatment: Add emboss patten on the top coating film surface to minimize light pollution caused by reflection 2.Edge Sealing Treatment: Nano PET film wrapped on both long sides of the sheet to form closed edges for better anti-corrosion protection.
  • 4. Advantages of the Nano Steel-Al Composite Panel in comparison to the Normal Pre-painted Galvanized Steel Sheet 1.Good Performance on Anti-corrosion Appearance after dipping both XHH Nano Steel-Al Composite Panel and PPGI into aqua regia for 30 minutes *Aqua regia: mixed solution of 36% hydrochloric acid(HCL)Land 68% nitric acid((HNO3) in the ratio of 3:1 2.Good Capacity on (UV reflective) Heat Insulation 20+℃ difference on panel surface temperature able to lower the indoor temperature by6℃~ 8℃ comparing to PPGI in summer time
  • 5. Test Report of National Center for Quality Supervision and Test of Building Engineering Testing Conclusion: Qualified to the Requirements of Specification on Quality according to the National Standard GB/T 23443-2009《Aluminum Panels for Building Decoration》 JG/T 402-2013 《Roofing Products from Metal Sheet with Reflect Thermal Coating》
  • 6. Test Report of Salt Spray Test By National Test Center of Polymer & Building Material Test Conclusion:No visible rust can be found after testing for 500 hours
  • 7. Test Report of Fire Resistance Capacity Test By Fujian Inspection and Research Institute for Product Quality Testing Conclusion: Qualified to the Requirements of A1 Class Incombustibility according to the National Standard GB8624-2012《Classification for burning behavior of building materials and products》
  • 8. Test Report On The UV Insulation Capacity Of The Top Coating Film Testing Result: UV Reflectivity: 80.9% UV Absorptivity: 19% UV Penetration Rate:0.1%
  • 9. In addition to the certificates we have got from nation run and some professional test centers, we have also established our own test laboratory equipped with kinds of testing facilities: 1.UV accelerated aging test machine 2.Humidity test chamber 3.Thermal insulation test box 4.Tensile test machine 5.Salt spray test machine 6.Cupping test machine
  • 10. 鑫 川 a 一 Conclusions of the Quality Tests carried out by the lab of our factory 1.Peeling Strength Test A forces of 85N/25.4mm(8.63kgf))is needed to peel off the composite coating layers: Nano PET film & Aluminum foil)from the surface of the base GI sheet. 2.Cupping Test Cupping test value:6mm No penetrating crack was found on surface coating film. 3.Salt Spray Test Test Span:over 1000 hours No shedding or bubbling phenomena was found on surface coatings film. 4.Elongation at Break ≥139% 5.UV Anti-aging Test Test Span:over 5000 hours 6.Color Fading Test Test Span:over 1800 hours 7.High Temperature Test Stay good in temperature range from -30℃ to 120℃
  • 11. XHH Nano Steel-Al Composite Panel (Poultry Livestock Farming Industry Specified)
  • 12. China is one of the earliest countries in the world to start poultry & livestock husbandry. With the rapid development of animal husbandry in China, especially the rapid development of large-scale and intensive commercial farming, the scale of animal husbandry and the output value increases at an annual rate of more than 10%. The establishment of intensive factory farms is an important way to adjust the industrial structure and increase income,,but it also faces serious pollution prevention and control problem.
  • 13. The pollution of animal husbandry mainly refers to the production of feces from livestock and waste from livestock and poultry farms in the livestock production process. While the most important pollution is from the feces of livestock and poultry. Livestock and poultry feces is not only harmful to the air, water, and human body, but also causes corrosion to the color steel plates and purlins of the farm building. According to relevant experts, a chicken produces 100g of feces every day, and about 36kg of feces every year. An industrial chicken farm that feeds 10,000 chickens will produce 1 ton of chicken feces per day, and about 360 tons of chicken feces every year; A pig produces 6kg of feces per day,and about 2 tons of feces every year. An industrial pig farm that feeds 1000 pigs will produce 6 ton of pig feces per day, and about 2000 tons of chicken feces every year;
  • 14. Feces Chemical Composition of Common livestock and poultry (%) Water Organic matter (N) P2O5 K2O Pig Feces 72.4 25.0 0.45 0.19 0.60 Cow Feces 77.5 20.3 0.34 0.16 0.40 Horse Feces 71.3 25.4 0.58 0.28 0.53 Sheep Feces 64.6 31.8 0.83 0.23 0.67 Chick Feces 50.5 25.5 1.63 1.54 0.85 Duck Feces 56.6 26.2 1.10 1.40 0.62 Goose Feces 77.1 23.4 0.55 0.50 0.95 Pigeon Feces 51.0 30.8 1.76 1.78 1.00
  • 15. Concentration of Common Livestock & Poultry Feces Pollutants(kg/t) CODcr BOD5 NH3-N TP TN Cow Feces 31.0 24.5 1.7 1.2 4.4 Cow Urine 6.0 4.0 3.5 0.4 8.0 Pig Feces 52.0 57.0 3.1 3.4 5.9 Pig Urine 9.0 5.0 1.4 0.5 3.3 Chick Feces 45.0 47.9 4.8 5.4 9.8 Duck Feces 46.3 30.0 0.8 6.2 11.0 *Data provided by the State Environmental Protection Administration
  • 16. The above two charts show that livestock feces contains chemical components such as nitrogen (N), phosphorus (P), potassium (K), and ammonia nitrogen (NH3-N), while the odor emitted from feces mainly contains hydrogen sulfide (H2S). And ammonia (NH3), two corrosive gases. Among them, hydrogen sulfide and ammonia cause the most serious corrosion to the color steel plates and purlins.
  • 17. H2S: H2S is an inorganic compound, which is normally a colorless, flammable acid gas. When the concentration is low, it is malodorous and the smell is rotten. At room temperature and pressure, dry H2S will not cause corrosion to metals, but when it dissolves in water, a wet H2S environment will be formed. Wet H2S reacts electrochemically on the metal surface, causing corrosion pits, spots, and large areas to fall off on the metal surface, so there will be perforation on the color steel plates and purlins ,and make them weaken or even crack.
  • 18. NH3: NH3 is a colorless gas with a strong pungent odor. NH3 can be ionized into NH4+ and OH- to form an electrolyte solution in a humid environment, and promote the metal galvanic reaction to accelerate metal corrosion. Although corrosiveness is not very strong, but under such circumstances for a long time, the surface of color steel plates and purlins slowly blisters, falls off and eventually rusts.
  • 19. To protect the corrosion to color steel plates from these pollution sources, the Xinhonghua Company has developed this Poultry & Livestock. Specified Nano Steel-Al Composite Panel product. This product adopts advanced composite technology, covering PET (polyethylene terephthalate) on the upper and lower sides of the color steel plate (upper: heat insulation + corrosion protection; lower: corrosion protection). Compared with ordinary color steel plate, the add-on protective films on both sides of the panel well protects the inside color steel plate from the direct eroding of corrosive gas, liquid being , so as to increase the service life,and reduce labor, material costs.
  • 20. The advantages of PET: 1.Good mechanical properties, impact strength is 3-5 times that of other films, exellent folding durability. ①Tensile Strength Vertical 210MPa Horizontal 210MPa.②Elongation at break Vertical 130%; Horizontal 130%. ③Thermal expansion rate 1.5%(150℃,30min) 2.High transparency, ultraviolet insulated, good gloss. ①Transmittance 91%。②UV insulated rate:99%。③Gloss rate:180%。 3.Low permeability against gas and water vapor 4.resistant to most solvents,such as oil, fat, dilute acid, dilute alkali... and etc. 5.With excellent high and low temperature performance, it can be used in the temperature range from 0℃ to 120°C for a long time. It can withstand 150°C high temperature and -70° C low temperature in short-term use, and its mechanical performance remains good when it is high or low temperature.
  • 21. Comparison after Testing for 240 Hours under Salt Spray Evironment XHH Nano Steel-Al Composite Panel (Poultry & Livestock Farm Industry Specified) Korean Brand Normal Pre-painted Galvanized Steel Sheet.
  • 22. Comparison after dipped in aqua regia for 20 minutes Aqua Regia(mixed solution of HCI & HNO₃ in volume ratio of 3:1) XHH Nano Steel-Al Composite Panel (Poultry & Livestock Farm Industry Specified) Korean Brand Normal Pre-painted Galvanized Steel Sheet.
  • 23. Comparison after dipped in aqua regia for 30 minutes Aqua Regia(mixed solution of HCI & HNO₃ in volume ratio of 3:1) XHH Nano Steel-Al Composite Panel (Poultry & Livestock Farm Industry Specified) Korean Brand Normal Pre-painted Galvanized Steel Sheet.
  • 24. Through the comparison of the above several experiments, we can see that XHH Nano Steel-Al Composite Panel (Poultry & Livestock Farm Industry Specified) is far better than the color steel plate in corrosion resistance. Because the PET film has good acid and alkali resistance capacity, high water and oxygen blocking rate. It will play an important protective role in blocking the pollutants from eroding the inside base GI sheet.
  • 25. XHH Panel Normal PPGI XHH Panel XHH Panel XHH Panel Normal PPGI Domestic Sample Project Finished in 2014:Dongshan Poultry Marketplace
  • 26. XHH Nano Steel-Al Composite Panel (Ceramic Industry Specified)
  • 27. China is known as the “kingdom of ceramics” and is the largest producer of ceramics in the world and a major exporter of ceramics. At present, there are nearly 3,000 architectural ceramics factories, more than 8,000 daily-use ceramics factories, more than 1,000 sanitary ceramics factories, and a considerable number of ceramic workshops in China. There are tens of thousands of large and small kilns, consuming 40 million to 50 million tons of standard coal every year. A large amount of exhaust gas produced in the production process can not be effectively treated and is discharged directly into the air. The exhaust gas not only pollutes the environment, but also causes corrosion to the color steel plates and purlins of the ceramic plant.
  • 28. The pollutants in the exhaust gas of the ceramic industry can be devided into common pollutants and specific pollutants. Common pollutants includes: carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen oxides (NOX), particulates, and etc., Specific pollutants includes: lead, cadmium, nickel, chlorides, fluorides, and etc., Among all pollutants,the common pollutants (SO2, NOX) have the most obvious pollution to color steel plates. The pollutants usually produce pungent odors in darker colors during the discharge process;
  • 29. SO2: The SO2 in the waste gas of the ceramic industry mainly generated by the sulfur in fuels (coal, heavy oil, etc.) and sulfur in ceramic raw materials. At high temperature, a portion of the sulfur from the ceramic raw material forms SOX (sulfide) into the furnace flue gas. Sulfur dioxide is a colorless, highly irritating toxic gas. When sulfur dioxide is dissolved in water, sulfurous acid H2SO3(the main component of acid rain) is formed. If there is a catalyst such as nitrogen dioxide (NO2), the sulfur dioxide will be further oxidized, and sulfuric acid (H2SO4) will be generated. Sulfuric acid is the most active binary inorganic strong acid that reacts with many metals. It will corrode the paint and cause the steel plate to rust and perforate.
  • 30. Comparison after dipped in aqua regia for 30 minutes Aqua Regia(mixed solution of HCI & HNO₃ in the ratio of 3:1) XHH Nano Steel-Al Composite Panel Ceramic Industry Specified Normal Pre-painted Galvanized Steel Sheet.
  • 31. NOX: NOX has three sources: rapid NOX, thermal NOX, and fuel NOX. rapid NOX generally accounts for 5% of the total; The generation of fuel NOX is closely related to the nitrogen content of the fuel; thermal NOX is mainly generated during fuel combustion. Nitrogen oxides as air pollutants often refer to nitric oxide (NO) and nitrogen dioxide (NO2). The chemical nature of nitric oxide is very lively. When it reacts with oxygen, it can form corrosive nitrogen dioxide. Nitrogen dioxide dissolves in water and reacts with water to produce nitric acid (HNO3). Nitric acid is a kind of strong acid with strong oxidizing and corrosive properties. It erodes the paint and zinc layer of the color steel plate, destroys the color steel plate, and reduces the service life.
  • 32. Comparison after dipped in HNO3 (nitric acid) for 5 minutes XHH Nano Steel-Al Composite Panel (Ceramic Industry Specified)In Normal Pre-painted Galvanized Steel Sheet.
  • 33. Domestic Sample Project: Zhangzhou Ceramic Factory Photos were taken two years after finished