This contract is signed on the principle of voluntariness and equality, so whether to sign a contract when buying products in the market is handled by both parties through consultation.
Legal basis:
Article 469 of the Civil Code
The parties may conclude a contract in writing, orally or in other forms.
Written form refers to contracts, letters, telegrams, telexes, faxes and other forms that can tangibly express the contents contained.
A data message that can tangibly express its content through electronic data interchange, e-mail, etc. , and can be retrieved at any time, are considered in writing.