modifying product_info_display.php page

Hi, I added the below code to the product_info_display.php. It works good.

You may have a view of my website. https://www.frhair.com

Now, I have a question. I want to add different words on different category products info page. Is it possible?
For example:
Category A, add "ABC"
Category B, add" DEF"
Category C, add"GHI"

Thanks for your help.

is there anybody who can help me?

I would normally suggest adding something like this to your product_info:

<?php
if (in_array($cPath,explode(",",'9')) ) {
echo '<div class="content" id="discountPolicy5" style="background: #999933; padding: 3px; width: 400px;"> 
     " Buy 2 or more lace wigs,get $30 off" </div>';
  } else if (in_array($cPath,explode(",",'1,23,33,35')) ) {
echo '<div class="content" id="discountPolicy5" style="background: #999933; padding: 3px; width: 400px;"> 
     " Buy 2 or more lace wigs,get $10 off" </div>';
  } else if (in_array($cPath,explode(",",'7,8,10')) ) {
echo '<div class="content" id="discountPolicy5" style="background: #999933; padding: 3px; width: 400px;"> 
     " Buy 2 or more lace wigs,get $20 off" </div>';
  } else {
echo '';
}
?>

Not sure it will work with a URL re-writer.

You might try Product Articles from Plugins (based on swguy's boilerplate file technique). It works on a per-product basis, i.e. you would need to add an HTML comment similar to

to each product description, which would cause the content of discount10.html to be output in the location you set up.
With this, you can include (and change) as many customized messages as you like without further touching PHP files.