query string at page 1 in codeigniter
Change your base_url as following
...base_url("admin/product/index/page/".$page_no."?search_in=".$search_in."&search_type=".$search_type."&search_product_name=".$search_product_name."&search_product_category=".$search_product_category."&search_product_status=".$search_product_status."&search=search")....Got the idea?
Use
'reuse_query_string' => TRUE
In place of
'suffix' => '?'.$_SERVER['QUERY_STRING']