Humidity Indicator Cards & Desiccant Solutions

About ONESTEP

Established in 2006, ONESTEP (Dongguan) Packaging Materials Co., Ltd. stands as a leading name in moisture control solutions. Situated in the thriving hub of Dongguan's industry, we've grown into a prominent manufacturer dedicated to researching, producing, and selling a wide range of desiccant bags, humidity indicator cards, and humidity indicator plugs.

With over 18 years of professional experience and serving more than 5000 global customers, we provide reliable, high-quality moisture protection products that meet international standards including MIL-I-8835, MS 20003-2, and JEDEC Standard 033D.

ISO 9001:2015 Certified OEM/ODM Services Global Shipping

Our Products

Comprehensive moisture control solutions for industrial, military, electronic, and commercial applications. All products designed for reliability, accuracy, and long-term performance.

Humidity Indicator Cards for PCB Industry

Humidity Indicator Cards (HIC)

Full line of HICs for barrier packaging. 30%, 40%, 50% cards comply with MS 20003-2. 60% card complies with JEDEC Standard 033D. Ideal for PCB, electronics, and military packaging.

MIL Spec JEDEC Compliant

Cobalt Dichloride Free HIC

Environmentally safe humidity indicator cards without cobalt dichloride. Provides accurate humidity monitoring while meeting RoHS and REACH compliance requirements.

RoHS Compliant Eco-Friendly

Cobalt & Halogen Free HIC

Advanced humidity indicator cards free from both cobalt and halogens. Ideal for sensitive applications requiring the highest environmental and safety standards.

Halogen Free High Safety

Military Transit Used Humidity Indicator Plug

Military Transit HIC Plug

Designed for military transit cases for electronics, weapons, and sensitive equipment. Fits standard case holes—no setup needed. Withstands extreme salt fog environments.

Military Grade Salt Fog Resistant

HIC Desiccator Plug

Also called "humidity indicator plug desiccator" – combines moisture absorption and humidity indication functions. Ideal for environments where controlling and monitoring humidity is crucial.

Dual Function High Efficiency

40-50-60% HIC Plug with Desiccant

Humidity indicator plug with integrated desiccant. Combines moisture absorption and visual humidity indication in one compact solution for critical storage applications.

Integrated Design Multi-Range

Stainless Steel HIC Plug

Durable stainless steel humidity indicator plugs for equipment protection. Detects RH from 5% to 95%. Available in multiple sizes for various industrial applications.

Stainless Steel 5-95% RH

Aluminum HIC Plug

Lightweight aluminum humidity indicator plugs offering excellent corrosion resistance. Ideal for aerospace, electronics, and transportation applications requiring lightweight solutions.

Aluminum Lightweight

Brass HIC Plug

Zinc-plated brass humidity indicator plugs offering excellent durability and conductivity. Suitable for industrial equipment, electrical enclosures, and harsh environments.

Brass Conductive

View All Products on Official Website

Why Choose ONESTEP

Decades of expertise in moisture control solutions with a commitment to quality, innovation, and customer satisfaction.

ISO 9001:2015 Certified

Our quality management system meets international standards, ensuring consistent product quality and reliability for every customer.

Global OEM/ODM Solutions

Customized moisture control solutions tailored to your specific requirements, with global shipping and support.

Military & Industrial Grade

Products designed to meet MIL-I-8835, MS 20003-2, and JEDEC Standard 033D for defense, aerospace, and critical industrial applications.

Eco-Friendly Options

Cobalt-free, halogen-free, and RoHS-compliant products available to meet environmental regulations and sustainability goals.

18+ Years Experience

Founded in 2006, we bring nearly two decades of specialized expertise in moisture control technology and manufacturing.

5000+ Global Customers

Trusted by clients in over 50 countries across electronics, defense, medical, automotive, and industrial sectors.

Frequently Asked Questions

Find answers to common questions about our products and services.

What are humidity indicator cards used for?

Humidity indicator cards (HICs) are used to visually monitor the relative humidity level inside sealed packaging. They help ensure that moisture-sensitive products like electronics, pharmaceuticals, and military equipment are stored in dry conditions.

Are your humidity indicator cards compliant with military standards?

Yes, our humidity indicator cards comply with MIL-I-8835 specifications. The 30%, 40%, and 50% cards meet MS 20003-2 requirements, while our 60% card complies with JEDEC Standard 033D.

Do you offer cobalt-free humidity indicator products?

Yes, we offer both cobalt dichloride free HICs and complete cobalt & halogen free options that meet RoHS and REACH compliance requirements for environmentally sensitive applications.

What materials are available for humidity indicator plugs?

Our humidity indicator plugs are available in aluminum, zinc-plated brass, stainless steel, and plastic materials to meet various application requirements including corrosion resistance, weight considerations, and conductivity needs.

Can you provide custom OEM/ODM solutions?

Yes, we offer comprehensive OEM and ODM services. We can customize product specifications, packaging, labeling, and branding according to your requirements.

Get in Touch

Have questions about our moisture control solutions? Contact our team for product information, quotes, or technical support.

Contact Information

Email: [email protected]

Mobile: +86 159 2569 2991

Tel: +86 769 2311 0531

Fax: +86 769 8903 2131

WhatsApp: +86 159 2569 2991

Skype: cnyukicao

WeChat: +8615925692991

Visit Official Website to Contact

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Professional Moisture Control Solutions