public static function wc_email_inquiry_action()
 {
     $product_id = esc_attr(stripslashes($_REQUEST['product_id']));
     $your_name = esc_attr(stripslashes($_REQUEST['your_name']));
     $your_email = esc_attr(stripslashes($_REQUEST['your_email']));
     $your_phone = esc_attr(stripslashes($_REQUEST['your_phone']));
     $your_message = esc_attr(stripslashes(strip_tags($_REQUEST['your_message'])));
     $send_copy_yourself = esc_attr(stripslashes($_REQUEST['send_copy']));
     $email_result = WC_Email_Inquiry_Functions::email_inquiry($product_id, $your_name, $your_email, $your_phone, $your_message, $send_copy_yourself);
     echo json_encode($email_result);
     die;
 }