Legal analysis: It has legal effect. If the parties conclude a contract in the form of a contract, they shall sign or seal it. If the parties concerned press their fingerprints on the contract, the people's court shall determine that it has the same legal effect as a signature or seal. As long as the relevant facts can be proven, the material can be used as evidence to prove the matter. Depending on the nature of the material, it can be documentary evidence or physical evidence.

Legal basis: Article 63 of the "People's Republic of China and Civil Procedure Law" includes: statements of the parties; documentary evidence; physical evidence; audio-visual materials; electronic data; witness testimony; appraisal opinions; investigation Inspection records.