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Advanced VCI Corrosion Protection Technology

Patented Oil-Free Vapor Corrosion Inhibitor Technology for Industrial Metal Packaging and Export Protection.

What is VCI Technology?

VCI is the abbreviation of Volatile Corrosion Inhibitor in English. It is a volatile corrosion inhibitor, referred to as a vaporized anti-rust product. When the packaged items are packaged with gasification anti-rust products, the anti-rust particles of the anti-rust products vaporize into gas, forming a protective film on the metal surface, cutting off the possibility of metal ions coming into contact with water and oxygen, thereby achieving the anti-rust effect.

The gas diffusion amount of the anti-rust particles inside is automatically adjusted after packaging. When the temperature or temperature increases, the diffusion amount of the anti-rust particles will also increase. On the contrary, the diffusion amount of the anti-rust particles will decrease. However, when the internal and external conditions are relatively stable, the anti-rust particles will temporarily stop evaporating outward and maintain an optimal anti-rust state until the external environment changes again, and the anti-rust particles will volatilize again. This automatically adjusts the gas concentration inside the packaging, keeping the packaging in the most stable rust-proof state.

Advantages of VCI Vapor Phase Anti-Rust Products

It has excellent gas phase and contact anti-rust properties, good anti-rust effect, and high cost performance.

Clean, harmless, non-toxic, environmentally friendly and safe. Passed SGS certification and complies with the requirements of the RoHS directive.

Anti-rust treated workpieces are ready for direct use without oiling, degreasing or cleaning, cutting labor, time and costs while boosting efficiency.

Transparent and beautiful, objects to be rust-proofed can be dynamically visualized and easy to identify.

Wide applicability. It can be used as small as a single part or as large as an entire device.

Wide applicability. It can be used as small as a single part or as large as an entire device.

How to Use?

1. Users or workers must wear gloves, and workers are strictly prohibited from touching the workpiece directly with their hands (gloves should be replaced promptly when they become dirty);

2. Before packaging the workpiece, make sure there is no rust or moisture residue. For products that are washed and dried in the early stage, they need to be cooled before packaging. The workpiece cannot have direct contact with any wood or acid-containing materials;

3. It is best to use airtight packaging, which can effectively prevent moisture from corroding the workpiece and improve the anti-rust effect;

4. The color of the anti-rust paper will vary depending on the batch of paper, but this difference will not affect the anti-rust effect;

5. To achieve the best anti-rust effect, it is recommended to test whether the VCI product is suitable for the workpiece to be packaged before use;

6. The anti-rust paper continues to emit a small amount of anti-rust substances, providing anti-rust protection to the metal surfaces in direct contact. The spacing between the anti-rust paper and the metal depends on the packaging volume and the time required for the final formation of the anti-rust protective layer. Generally it is 10-30cm.

＜25L---about 30 minutes
＜1m³---about 3 hours
＞10m³---more than 10 hours

According to the size of the packaging volume, the final formation of anti-rust protection is up to 20 hours

Why Is Anti-Rust Paper Divided into Single/Double-Sided Anti-Rust?

Differences in Process

Single-sided anti-rust paper is coated with VCI anti-rust agent by a scraper. The scraper contacts one side of the base paper, and the gas-phase anti-rust agent on the scraper enters the anti-rust base paper. Then the anti-rust paper produced is single-sided anti-rust paper. Double-sided anti-rust paper is produced by dip coating. The base paper needs to pass through the VCI anti-rust agent, so that it will all contain VCI vapor phase anti-rust agent. Depending on the equipment and processing technology, the anti-rust paper produced is divided into single-sided anti-rust paper and double-sided anti-rust paper.

Difference in Humidity

It is also 60 grams of anti-rust base paper. The content of VCI anti-rust agent in double-sided anti-rust paper is about 12 grams. The content of VCI anti-rust agent in single-sided anti-rust paper is about 8 grams. The humidity of double-sided anti-rust paper is ≥35% due to the large amount of anti-rust agent applied on it, while the humidity of single-sided anti-rust paper is ≤25%.

Differences in Anti-Rust

1 piece of double-sided anti-rust paper is equal to 2 pieces of single-sided anti-rust paper (cushion/separation anti-rust paper for metal parts).

Double-sided anti-rust paper contains VCI anti-rust agent on both sides, so one piece can be used on two layers of metal parts, and each side can effectively prevent rust; while 2 pieces of single-sided anti-rust paper must be used, facing one layer of metal respectively, that is, 2 pieces of anti-rust paper are used to separate metal parts, which is the cushion. However, due to the high humidity of double-sided anti-rust paper, there are great restrictions on use. For example, for overseas transportation, high paper humidity will have an adverse impact on the product packaging environment. Therefore, customers need to use double-sided anti-rust paper. It is recommended to conduct a simulation experiment before use.

Traditional Rust Prevention vs VCI+

Traditional Oil	VCI+ Technology
Oily residue	Oil-free
Need cleaning	No cleaning
Labor intensive	Easy packaging
Environmental pollution	Eco-friendly
Traditional Oil	VCI+ Technology
Poor export performance	Long-distance shipping protection

Why VCI+ Technology Works Better

WHAT WE OFFER

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Nano-Controlled Release

Active agents regulate their release rate on demand, ensuring balanced and long-lasting protective efficacy.

Multi-Metal Protection

A single solution covers both ferrous and non-ferrous metals, completely eliminating corrosion interference between dissimilar metals.

Extended Lifespan

Under conditions ranging from indoor storage to extreme transit environments, the rust-prevention lifecycle extends for several years.

Corrosion Testing & Validation

The VCI R&D laboratory is located in the production base of Jinshan Industrial Zone in Shanghai, with a total area of more than 1,000 square meters.

It is the technical core of the company's VCI+ environmentally friendly and anti-rust new materials. The laboratory carries the full-link R&D mission from formula development, pilot scale-up to full product performance verification. Each batch of products must pass strict environmental simulation tests before leaving the factory.

Laboratory Overview - Innovation Starts Here

National High-tech Enterprise & Specialized and Specialized 'Little Giant' Core Innovation Platform

40+

National Patent

1000㎡

R&D Testing Center

5%-10%

Annual R&D Investment

Core Technology - Vci+nano Dual Engine Drive

VCI+NANO nanocomposite anti-rust technology and water-based anti-rust technology independently developed by VCI have achieved a leap from 'oil seal' to 'dry oil-free anti-rust'. By using nanomaterials to enhance the adsorption of gas phase corrosion inhibitor molecules on the metal surface and the density of film formation, the anti-rust period and protection stability are 1.5 to 2 times that of traditional VCI products.

Dry anti-rust, the workpiece is clean and oil-free after unsealing, no cleaning required.

Does not contain harmful heavy metals and nitrites, meets RoHS/REACH.

Can be combined with degradable materials to achieve a green packaging closed loop.

Testing and Inspection Capabilities - Responsible for Each Batch of Products

The laboratory has established a full-process quality control system from raw materials, semi-finished products to finished products, and can perform the following testing items on a full range of products such as VCI anti-rust film/bags, anti-rust paper, anti-rust masterbatch, anti-rust liquid, and emitters:

Test Categories	Specific Items
Anti-rust performance	High temperature and high humidity accelerated test, salt spray test, vapor phase corrosion inhibition ability test
Physical mechanics	Tensile strength, tear strength, heat seal strength, moisture permeability
Environmental protection and safety	RoHS 10 items, REACH SVHC, degradability rate
International standard benchmarking	U.S. military standard MIL-P-3420E, German military standard TL8135-0002, national standard GB/T 19532

The inspection team masters QB/T 1319, GB/T 16267 and other standards, and issues traceable factory inspection reports for each batch.

R&d Talents and Teams——international Chemical Enterprise Background

The company's core technology and senior management team mainly come from the world's leading chemical companies such as BASF, Rhodia, Wacker, and Lubrizol, inheriting international R&D processes and quality awareness. The team has many years of industrialization experience in the fields of VCI vapor phase rust prevention, water-based functional materials, degradable packaging and other fields.

Annual R&D investment accounts for 5%~10%

Won the 'Best Lithium Battery Packaging Company of the Year Award' in 2023

Leading the 'High-tech Achievements Transformation' project in Shanghai

Certifications and Standards - A Global Endorsement of Quality

VCI Laboratories and products have passed the following authoritative certifications and standard tests:

System Certification

ISO 9001 / ISO 14001
German TUV ISO dual certification
Alibaba TUV physical certification factory
Global recycling standard GRS 4.0

Product Standards

National standard GB/T 195322018 (VCI2000 anti-rust film)
Industry standard QB/T 13192010 (M+ anti-rust paper)
U.S. military standard MILP3420E
German military standard TL81350002
RoHS/REACH/SGS full export environmental protection

External Cooperation and Technical Support

The laboratory is not only an internal innovation base, but also a technology empowerment center for customers.

The laboratory adheres to the concept of 'open technology and joint solution of problems' and has provided in-depth technical support to ten major industries including automobiles, aviation, wind power, and military industry.

On-site Inspection & Custom Tests

Go deep into customer workshops and warehousing, systematically analyze the causes of corrosion, and tailor-made verification of anti-rust solutions

One-Stop Process Support

Covering the entire chain of

cutting → rust removal → cleaning → anti-rust → packaging → anti-corrosion

International Technical Exchanges

We have received inspections from overseas industrial groups in Southeast Asia, Turkey, etc., and our VCI masterbatch products have been highly praised

40+

National patent
1000㎡

R&D testing area
1.5~2

Improved protection multiplier
10

Covered industries

Innovation & Patents

VCI is deeply involved in the field of VCI vapor phase rust prevention. So far, it has won more than 40 national patents and has disclosed 56 patent information. The new generation of VCI+NANO and water-based anti-rust technology independently developed by the company fully realizes dry rust-proof and oil-free anti-rust packaging. The following is a summary of the core patents:

CN 121496406 A

A high molecular weight gas-phase rust inhibitor and its preparation method

Patent Publication No.: CN 121496406 A

Application Date: November 12, 2025
Public Date: February 10, 2026
Technical Highlights:

1. Adopting a composite structure of magnesium chloride mixture and COFs covalent organic framework material to achieve synergistic response of moisture absorption and sustained release, effectively expanding the temperature range of application

2. Bulk density ≥ 0.75g/ml; Moisture absorption rate ≥ 92% at room temperature of 25 ℃, and ≥ 88% at high temperature of 70 ℃; The gas phase slow-release ability reaches level 0 or level 1, and the mechanical wear rate is less than 1.2%

3. Suitable for long-term rust prevention and sealing in enclosed spaces such as firearms, artillery chambers, and long and thin pipelines, maintaining protective stability in extreme temperature difference environments

CN 119250616 A

Product quality testing methods, quality testing systems, and storage media

Patent Publication No.: CN 119250616 A
Application Date: September 2024
Public Date: January 2025
Technical Highlights:
1. By flattening the database design structure, quality inspection projects can be flexibly added, modified, and adjusted without the need to modify database fields every time

2. It can automatically generate quality inspection reports from inspection forms, reducing manual operations and human errors

CN 206426583 U

VCI2000 strong anti rust performance VCI film

Patent Number: ZL 201720074478.8/CN 206426583 U
Application Date: January 19, 2017
Public Date: August 22, 2017
Technical Highlights:
1. Produced by double-layer co extrusion method, the outer layer is polyethylene, which can prevent external water vapor from entering; The inner layer is a uniform mixture layer of polyethylene and gas-phase corrosion inhibitor

2. During packaging, the film layer automatically emits VCI gas-phase rust prevention gas, which vaporizes and condenses on all metal surfaces (including holes, gaps, and other areas that are difficult to reach with traditional coatings) in a closed space, forming a gas-phase protective layer

3. After unsealing, the workpiece is clean and can be used directly, eliminating the need for oil coating and degreasing processes; Compliant with US military standards MILB22019C and MILB22020C, certified by SGS, and compliant with RoHS directive requirements

CN 206426592 U

An improved structure of aluminum foil anti rust film

Patent Number: ZL 201720077253.8/CN 206426592 U
Application Date: January 19, 2017
Public Date: August 22, 2017
Technical Highlights:
1. Adopting a three-layer composite structure - the outer layer is PE light film, the middle layer is aluminum film, and the inner layer is VCI rust proof PE film

2. The aluminum film layer provides excellent moisture resistance, oxygen resistance, and light shielding performance; VCI anti rust PE layer provides active gas-phase anti rust protection; PE film layer provides structural support and weather resistance

3. With a simple structure and low overall cost, it is suitable for precision electronic components, military optical equipment, and other scenarios that require extremely high moisture and light shielding requirements

CN 109132198 A

VCI degradable rust proof film

Patent Publication No.: CN 109132198 A
Application Date: September 6th, 2018
Public Date: January 4th, 2019
Technical Highlights:
1. Composed of an outer layer and an inner layer, the outer layer is prepared from polyvinyl alcohol, starch, photosensitizer, and biodegradable agent, and has biodegradation function; The inner layer is a mixed layer of gas-phase corrosion inhibitor, which continuously releases VCI gas-phase anti rust molecules

2.After composting for 180 days, it can decompose into carbon dioxide and water without polluting the environment; At the same time, it breaks through the limitations of rust prevention and has a wide range of applications

3. Meet the environmental tax exemption policy requirements for exporting to the EU market and align with the global trend of green packaging

CN 218084596 U

A wrinkle lined anti rust paper

Patent Publication Number: CN 218084596 U
Application Date: August 31, 2022
Public Date: December 20, 2022
Technical Highlights:
1. It includes a barrier layer, a reinforcement layer, a paper layer, and an anti rust layer arranged in sequence from the outside to the inside. The reinforcement layer is a grid like wire structure composite set on the paper layer

2. The grid wire structure greatly increases the physical strength and elongation of the paper, meeting the needs of automated winding by machines and making it less prone to wear and tear

3. Waterproof and moisture-proof, can effectively block external environmental interference, form a closed space, and effectively improve the anti rust effect

CN 109758950 B

Mixing device and rust inhibitor for controlling the weight ratio of water-soluble rust inhibitor raw materials

Patent Number: CN 109758950 B
Application Date: January 25th, 2019
Publication (Authorization) Date: June 16, 2020
Technical Highlights:
1. Including base plate, raw material ratio control device, two conveying frames, and mixing device

2. Accurately control the weighing ratio and stirring uniformity of water-soluble rust inhibitor raw materials to ensure consistency in product quality

3. Cooperate with the formula of the new VCI environmentally friendly water-based rust inhibitor (composed of 1-hydroxybenzotriazole, dicyclohexylamine octanoate, triethanolamine, antioxidant, ethanol, and water, etc.) to improve production efficiency and quality stability

CN 109291577 A

VCI high tensile heat shrinkable rust proof film

Patent Application Number: 201811036718.0/CN 109291577 A
Application Date: September 2018
Public Day: 2019
Technical Highlights:
1. Composed of an outer layer and an inner layer, the outer layer is made of polyethylene film, which endows the film material with good thermal shrinkage performance and tensile strength

2. When heating, tightly wrap the shape of the workpiece to form a closed protective space, especially suitable for overall packaging of irregular shapes or large components

3. Solve the problem of tight wrapping of large irregular parts (such as wind turbine gearboxes and heavy machinery components)

CN 109291577 A

Multi metal anti-static and rust proof film

Development Year: 2016
Technical Highlights:
1. Adopt VCI gas-phase rust prevention molecules to protect both ferrous metals (iron, carbon steel) and non-ferrous metals (copper, aluminum, zinc, etc.), avoiding galvanic corrosion caused by differences in metal potential

2. Add anti-static additives to make the surface resistivity of the film material ≤ 10 ^ 11 Ω, suitable for anti-static packaging of precision electronic components

3. Comprehensive protection compatible with multi metal mixed components, widely used in aviation, electronics, precision machinery and other fields

CN 109291577 A

VCIACS corrosion conversion agent

Technical Highlights:
1. Water based formula, can form a transformation layer on corroded surfaces without polishing, with dual functions of rust removal and prevention, easy and fast construction, environmentally friendly and pollution-free

2. Merge the traditional "manual polishing → coating" process into a one-step "direct coating" process, significantly reducing construction costs and polishing dust pollution

3. Suitable for large-scale rust treatment scenarios in shipbuilding, steel structures, etc

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VCI EP NEW MATERIALS (SHANGHAI) CO., LTD. is a high-tech enterprise which is specialized in the research and development of VCI+ new environmentally-friendly anti-rust materials. Our company is a listed company.

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