How to look up the explosion-proof certification?

How to look up the explosion-proof certification?


For example : To look up the explosion-proof certification of "eYc THM14EX EX-Series Temp. and Humidity Transmitter":

《 Step 1》Logging into the searching system page of NEPSI, as the following picture :  

Logging into the searching system page of NEPSI


《 Step 2》Key-in the certificate number, manufacturer and product name into blanks, as the following picture :  

Key-in the certificate number, manufacturer and product name into blanks


《 Step 3》Click the lower right "Search button", then, the page will show the relevant explosion-proof certification information of the product, as the following picture :

Click the lower right