You can contact our After Sales department from 8 Am till 14:30 Pm everyday except national holidays with the phone numbers bellow :

Amin Hosein Meamarpour
Installation Supervisor 
Mobile : +98 913 1998441
Office : +98 34 32112452 (Int.18)
Email : Service@Sinawood.com
Or you can send your request by contact tab in the web page .