xyzshop/helper/refill/RefillFactory.php

<?php

namespace refill;

class RefillFactory
{
    public static function instance()
    {
        if(defined('COMPANY_NAME') && COMPANY_NAME === 'LZKJ_COMPANY') {
            require_once(BASE_HELPER_PATH . '/refill/LZRefillFactory.php');
            return LZRefillFactory::instance();
        }
        else {
            require_once(BASE_HELPER_PATH . '/refill/XYZRefillFactory.php');
            return null;
        }
    }
}