Change your href to:
<a href="/sd/view/<?php echo $obj->product_code.'/'.$obj->product_name; ?>">View</a>
then use these rules in your `/sd/.htaccess:
<IfModule mod_rewrite.c>
Options +Indexes
Options +FollowSymLinks -MultiViews
RewriteEngine On
RewriteBase /sd/
RewriteCond %{QUERY_STRING} hack
RewriteCond %{HTTP_COOKIE} !go
RewriteRule . - [F]
RewriteRule ^view/([\w-]+) view.php?procode=$1 [L,QSA,NC]
</IfModule>