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Sell cobalt free humidity indicator card

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  • Company Name :Dongguan Wei Yi Electronic Technology Co.,LTD
  • Membership :Free member
  • Registrarion Date :2019. 07. 23
  • CountryRegion:China
  • Address:NO.10 LUHUA EAST ROAD,ZENG ILLAGE,CHASHAN TOWN Dongguan Guangdong, China
  • Phone / Fax:86-133-32630165  /  0769-2318-6063
  • Contact:Eric_huang
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Why I need choose your product?

Existing humidity indicator cards found in the market are impregnated with a chemical called cobalt chloride In the dry state, cobalt chloride is blue in color. After absorbing moisture cobalt chloride changes to pink color. A recent amendment made to the European CEE directive 67-548 pertaining to the Classification, Packaging and Labeling of dangerous materials, has classified cobalt chloride as a carcinogenic material. Improper handling of items containing carcinogen may cause health hazards and environment hazards, thus, goods containing cobalt chloride will not meet EU standards.
Our new range of humidity indicator cards are carcinogen-free and meet EU standards and color change can be blue to pink, yellow to azure, blown to green.


Competitive price
Bright color; high recognition
Meet ROHS, EU standards, SGS
A back film to prevent chemical to reverse to your products  
Using environmentally friendly ink and moisture-sensitive chemical

Why choose us ?

1.OEM manufacturer --- 11 years’ experience of Anti-moisture and Mildew, Anti-static products
1)An effective product research and design team
2)Using advanced equipment
3)Having a complete produce line
4)Making our service more professional
5)Strong capacity

2.Quality Assurance

1)Our company holds ISO 9001:2015; ISO 14001:2015 certification.
2)Our products comply with JEDEC J-033B, RoHS, MIL-I-8835 certification, SGS.

3.Large Scale Production---Competitive Price

Capacity 40% higher, cost 20% lower than competitors

4.Customized moisture-proof application resolution for you

Product Image

  • Sell cobalt free humidity indicator card

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