Metal Surface Treatment Chemicals
Copper / aluminum / stainless steel passivation, sealing and cleaning solutions for industrial customers
Founded in 2010, Minghan Chemical has long focused on passivation agents, sealing agents, degreasers, polishing agents and anti-rust oils for copper, die-cast aluminum and stainless steel products, helping customers improve oxidation resistance, corrosion resistance and salt spray performance.
R&D, quality and service capabilities built for long-term supply
2010
Founded
Focused on metal surface treatment
5000+
Customers served
Industrial customer base across applications
ISO9001
Quality system
Certificate details should be verified before launch
ROHS
Environmental support
Compliance documents support buyer validation
131
Patented technologies
Company profile indicates accumulated IP
Integrated R&D, production, sales and technical service
Minghan Chemical focuses on R&D, production and technical service for copper, die-cast aluminum and stainless steel passivation agents, sealing agents, degreasers, polishing agents, anti-rust oils and related products.
A product portfolio built around metal surface treatment workflows
From degreasing and cleaning to acid pickling, passivation, sealing and rust prevention, the product system supports copper, aluminum, stainless steel, plated parts and steel components.
Product System
A product portfolio built around metal surface treatment workflows
From degreasing and cleaning to acid pickling, passivation, sealing and rust prevention, the product system supports copper, aluminum, stainless steel, plated parts and steel components.
Passivation chemistry for copper, aluminum alloy and stainless steel surface protection.
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Sealing solutions for plated layers, oxide films and treated metal surfaces.
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Industrial degreasing and cleaning products for spray, immersion and pretreatment processes.
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Supporting chemicals for rust prevention, rust removal and copper brightening.
View categorySolutions organized by material and process needs
The homepage guides buyers from materials and treatment problems to relevant products and cases.
Six strengths supporting long-term cooperation
Company materials highlight experience, R&D, raw materials, environmental products, formulation capability and technical support.
16 years of focus
Strong R&D
Selected imported materials
Environmental product system
362 validated formulations
Quality and after-sales support
Helping buyers and engineers validate suppliers faster
Certificates, test reports and technical documents are critical conversion assets for chemical B2B websites.
ISO9001
Quality management certificate images and validity should be added before launch.
ROHS support
Supports buyer validation for environmental and restricted substance requirements.
Test reports
Product pages should provide TDS, SDS/MSDS, COA samples and salt spray test data.
Supporting leading manufacturers and industrial customers
Company materials list partners across new energy, electronics, appliances, security and rail transportation.
Before-and-after evidence for treatment performance
Case pages should connect material, problem, product, process result and testing evidence.
Before Passivation & Sealing
After Passivation & Sealing
Copper passivation and sealing
Copper Passivation and Sealing Before-and-after Comparison
For red copper parts with surface oxidation, fingerprints and short-term discoloration, Minghan established a degreasing, copper passivation and sealing process to improve surface cleanliness, oxidation resistance and storage stability.
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Before Brass Passivation
After Brass Passivation
Brass passivation anti-discoloration
Brass Passivation Before-and-after Comparison
For brass parts that easily darken, discolor and show uneven appearance after cleaning, Minghan established a degreasing, brass passivation and drying packaging process to improve surface cleanliness, oxidation resistance and storage stability.
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Before passivation
After passivation
Die-cast aluminum parts plant
Die-cast Aluminum Passivation Before-and-after Comparison
For die-cast aluminum parts with darkening, uneven appearance, short-term oxidation and insufficient corrosion resistance after cleaning, Minghan established a degreasing, natural passivation and drying protection process to improve surface uniformity, oxidation resistance and handling stability.
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Before Passivation
After Passivation
Stainless steel passivation
Stainless Steel Passivation Before-and-after Comparison
For stainless steel parts with weld discoloration, surface oxidation, light rust spots and insufficient corrosion resistance, Minghan established a cleaning, activation, passivation, rinsing and drying process to improve surface cleanliness and corrosion resistance.
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Before Polishing
After Polishing
Copper polishing brightening
Copper Polishing Agent Before-and-After Treatment Case
For copper parts with dull oxidation, visible machining marks and insufficient brightness, Minghan established a degreasing, copper polishing and optional anti-oxidation protection process to improve surface brightness, cleanliness and appearance consistency.
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Before
After
Stainless steel degreasing
Stainless Steel Hardware Degreasing and Cleaning Before-and-after Comparison
For stainless steel hardware with machining oil, fingerprints, dust and polishing residue, Minghan established a stainless steel degreasing, rinsing and drying process to improve surface cleanliness, appearance consistency and subsequent passivation stability.
View caseProduct application knowledge for SEO and buyer education
Technical articles help organic acquisition and shorten buyer validation.
Frequently Asked Questions
Tell us your material, process and testing requirements
Minghan Chemical can help match products and technical support according to material type, process method, salt spray target and delivery needs.