In addition to the immediate settlement of the business negotiation contract, written form should be adopted, including the text of the contract, as well as letters, letters, telegrams and telexes to modify the contract.
Business negotiation contracts shall be in writing, including the text of the contract, as well as letters, letters, telegrams and telexes amending the contract, in addition to their immediate closing.
. in addition to the immediate settlement of the commercial negotiation contract, it shall be in written form, including the text of the contract, as well as the letters, letters, telegrams and telex to modify the contract.