public static function adjustOut($sku, $num, $userCnName)
{
$paramArr['method'] = 'wh.adjustOut';
//API名称
$paramArr['sku'] = $sku;
$paramArr['num'] = $num;
$paramArr['truename'] = $userCnName;
$purchase_info = UserCacheModel::callOpenSystem1($paramArr);
return $purchase_info;
}