MC60 , How to extract certification files from PFX file

Hi , Every body
I have certification files as below:
root.cer
imei.cer
imei.pem
imei.pfx
i need to know how we can convert or extract:
ca_cer t.pem
client_cert.pem
client_key.pem

thanks

Hi Amir_Zendehdel:
If you want convert pfx to pem,you can find convert tools online.
You can check your certification files,If it is in the following format, it is pem and can be used directly:

Hi,Winnie.Xie
Many thanks for your replay.
yes
its true, its working now.