Keyhan Factory: No.2, 6 Sanat Street, Shahid Zavarei Industrial Zone, Tehran 021-5658-8091 09203615026 info@kgs-co.com Saturday to Wednesday: 9:00 am to 5:00 pmThursdays: 9:00 am to 1:00 pm Working Hours Saturday – Wednesday : 9:00-18:00, Thursday : 9:00-14:00