diff --git a/ZeroSSL.com-CA.md b/ZeroSSL.com-CA.md
index a8f9555..a283a99 100644
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@@ -1,5 +1,10 @@
 Using ZeroSSL.com CA  
  
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+See also:  https://github.com/acmesh-official/acme.sh/wiki/Change-default-CA-to-ZeroSSL
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+
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 ZeroSSL doesn't have stagging and no production rate limit, you can issue unlimited SSL of 90 Days.
 
 Alternatively you can create account and grab your acme creditentals faster on [ZeroSSL ](https://zerossl.com) and even manage issued SSL.