Since 2014, COVNA has been approved by CE, which means its production process and products are safe.
Since 2014, COVNA has been approved by ISO9001, which means its production processes are safe and qualitied.
Since 2014, COVNA achieves RoHS certification.It certifies that there are few/no materials in our product that are on a list of known-toxic materials.
Since 2014, COVNA has been approved by ISO14001, which means its production processes are eco-friendly.
Good grade valve series has been approved by FDA, which means it is food safe for food and beverage industries.
Explosion-proof valve series has been approved by CNEX, which means it is safe and non-explode.
Explosion-proof solenoid coil has been approved by CNEX, which means it is safe and non-explode.