One of the most important chemicals is used in hardening salts is sodium cyanide. Sodium cyanide also is used in electroplating and mineral industry in great supply. Restricts in imports and sanctions both cause GSCo to produce sodium cyanide (40%) for its consumption.
Now with sanction reducing and import beginning, the producing of sodium cyanide is stopped because of profit. But fortunately access to the technology of producing it will be an opportunity for probable situations to help country industries.
By the way consulting about NaCN choice and selecting imported types is easier because of knowing about making processes.