Multiple rewrite rules within .htaccess

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /products.php?brandid=27&pname=$1 [NC]

PHP:

The above works only for branid=27


And, If I include mutilple statements, LIKE

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /products.php?brandid=27&pname=$1 [NC]
RewriteRule ^(.*)$ /products.php?brandid=42&pname=$1 [NC]
RewriteRule ^(.*)$ /products.php?brandid=47&pname=$1 [NC]

PHP:

it will also run for brandid 27.


I tried lots of stuff but wont able to rewrite rules for mutiple brandid.

For Example:
The url [http://www.3gphone.in/products.php?brandid=27&pname=Acer] redirects [http://www.3gphone.in/Acer]

 

Thanks a lot for posting the coding part ,I definitely use the tool.