Yuhuan Xinlong machinery Add： P.C： Tel：+86-0576-87378628 Fax：+86-0576-87356432  Email： xlskjc@126.com Web：Http://www.xinlongcnc.com   If you have any problem during your installation and using after you buy it, please check its question list, you will get detail answer. If you have more question during inuse, you can call our hotline, we should give you answer.