DEAR SiRWe are going to produce sodium sulphide flake 60% by Sodium Sulphate (Na2SO4) and Carbon with capacity Of 10000 mt per year . we have any specific reason to use Sodium Sulphate for this technology .It is available easily and cheaply in iran.Do you have This technology and machinery?We are glad to underestand your ability.We would like to colebration with your company soon.Best regardsm.parsaiypoya sanat Co Ltd97, Torkashvand St., Khavaran Ave,Tehran, IRAN.Tel:00982133487406Fax:00982133487407Mobile:00989122598699