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Trusted by global manufacturers for over 25 years. ISO9001, ISO13485, and CE certified. Eco-friendly, accurate, and reliable humidity monitoring for PCB packaging, medical devices, and sensitive electronics.
A trusted manufacturer with 25+ years of experience in humidity control solutions.
Founded in 1986, Jinan Humiditycard Co., Ltd. has grown into a leading manufacturer of humidity indicator cards with over 300 employees and an annual output exceeding one billion yuan. We specialize in cobalt-free, halogen-free, and eco-friendly humidity indicators for global industrial and electronic markets.
Our products are used in PCB packaging, medical devices, transformers, and air dryers. We are certified under ISO9001, ISO14001, and ISO13485, ensuring the highest standards in quality and environmental management.
High-accuracy, cobalt-free, and eco-friendly solutions for every industrial need.
Cobalt-free, halogen-free indicator for precise moisture detection in electronic packaging.
Full-range monitoring from 10% to 60% RH. Color change from yellow to green for clear visibility.
Designed for low-humidity environments. Ensures optimal storage conditions for sensitive components.
Environmentally safe alternative with no toxic cobalt chloride. Fully compliant with RoHS and REACH.
Specifically designed for moisture-sensitive devices (MSD). Prevents oxidation and damage during storage.
Dual monitoring system for environments requiring both temperature and humidity tracking.
Wide-range indicator with clear color transition. Ideal for long-term storage and export shipments.
Sterilization validation for medical devices. Changes color upon exposure to ETO gas.
We combine quality, compliance, and global service to protect your products.
ISO9001, ISO13485, CE, and RoHS compliant. Full traceability and batch control.
Safe for users and the environment. No toxic cobalt chloride used in production.
Over 20 years of foreign trade. Shipped to North America, Europe, and Asia.
Dedicated support team. Fast response within 24 hours for all inquiries.
A cobalt-free humidity indicator card uses non-toxic dyes instead of cobalt chloride to show moisture levels. It changes color from yellow to green as humidity increases, offering a safe and eco-friendly alternative.
Yes, all our cobalt-free and halogen-free humidity cards are fully compliant with RoHS, REACH, and other international environmental regulations.
Yes, we offer OEM and ODM services. You can customize the humidity range, color scheme, size, and printing for bulk orders.
Each dot corresponds to a specific humidity level (e.g., 10%, 30%, 60%). When the dot changes color, it indicates that the environment has reached or exceeded that humidity level.
Yes, we provide competitive bulk pricing for large orders. Contact us for a customized quote based on your volume and specifications.
For inquiries, quotes, or technical support, please visit the official website to contact Jinan Humiditycard Co., Ltd.
Ms. Yan Zeng handles customer inquiries. Response within 24 hours.
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