Rosen (Hubei Province) International Import & Export Co., Ltd
Since its establishment in 2008, Ruihang Group has always been driven by innovation, growing from China's leading supplier of galvannealed steel to a dynamic benchmark in the field of comprehensive global steel services. During the past 17 years, we have worked together with top-tier partners (Baowu Group, HBIS-POSCO, VAMA, etc.) to provide forward-looking material solutions for industries such as automotive components, smart home appliances and high-end manufacturing, with our strength ,we redefine the value of the supply chain .
Global Vision
Nearly 20 years in steel industry, now expanding globally to provide stable galvannealed steel supply.
Supply Chain Strength
Primary agent for state-owned enterprises & joint-venture steel mills; Top galvannealed steel supplier with 150,000 MT annual sales volume.
Core Product Advantages
Exceptional corrosion resistance/Superior coating adhesion/Excellent weldability/Enhanced hardness&wear resistance/Improved heat resistance.
International Certification, Quality Assurance
Compliant with EN 10346 standard, ISO 9001 certification, strict quality control system; ISO14001 certification; IATF16949:2016 certification, etc.
Supply Flexibility
Low MOQ support for SMEs; 30,000+ MT standby inventory; 72-hour rapid delivery for urgent orders.
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Contact us for more information about products and applications
Globally Trusted Galvannealed Steel Supplier
Revolution in door industry
Galvannealed solutions empower the manufacturing of high-end security doors
Precise insights
Breakthrough role
Collaborative innovation
Revolutionary achievements
Core value manifested
Services Highlight
We can provide three core customization services for raw material,semi-finished product and finished door.
STEP 1
Requirement Confirmation
STEP 2
Project Design
STEP 3
Sample Verification
STEP 4
Mass Production
STEP 5
After-Sales Follow-up
Raw materials customization service
Three core products: galvannealed(GA)/hot-dip galvanizing (GI)/cold rolling (CR)
Semi-finished products customization service
Customized processing services|Professional surface treatment solutions
Finished doors customization service
Customized finished doors service | Professional steel solutions
Raw materials customization service
Three core products: galvannealed(GA)/hot-dip galvanizing (GI)/cold rolling (CR)
Semi-finished products customization service
Customized processing services|Professional surface treatment solutions
Finished doors customization service
Customized finished doors service | Professional steel solutions
Our partners
November 19, 2025
Production Process: The main production process of alloyed galvanized steel sheets (GA sheets) involves the strip steel, after exiting the zinc bath but before the coating solidifies, entering a zinc alloying furnace.
October 23, 2025
Steel companies, accounting for over 80% of the world's ferrous metallurgical industry capacity, employ the traditional long-process production technology of "sintering – ironmaking – steelmaking – rolling." This technology boasts advantages such as high efficiency and large-scale steel production
October 30, 2025
Aging – Changes in the physical and mechanical properties of low-carbon steel after a period of storage. Increased temperature accelerates the aging process.
November 06, 2025
Hot-dip galvanized coil (pure zinc coating) and hot-dip galvanized zinc-iron alloy coil (alloyed coating) are two key materials widely used in the field of steel corrosion protection. Although both are based on the hot-dip galvanizing process, they differ fundamentally in coating composition, microstructure, performance, and applications.
November 19, 2025
"Gray electrolytic" is a very descriptive colloquial term used in the steel industry to refer to alloyed hot-dip galvanized steel sheets (GA sheets). While not an official academic term, it accurately summarizes the key technological characteristics and appearance of this product.
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Contact Us
E-mail: partner@rosensteelga.com
Tel: +86-27-86615388
WhatsApp: +86 177 6252 7953
WeChat:Rosen17762527953
Add.: No. 1, 30th Floor, Building 1, Fuxing Huiyu Waterfront International, Sanjiao Road Village, Xujiapeng Street, Wuchang District, Wuhan City, Hubei Province,P.R.China
