The main difference between watermark contract and non-watermark contract lies in the existence of watermark. Watermarking refers to adding background patterns or characters to contract texts or documents as a method to prevent counterfeiting or protect contract contents. Watermarks are generally made and added by seal companies or professional printing companies, which can contain words, patterns, company logos and other contents, and have certain confidentiality and security.

Specifically, the watermark contract has the following advantages over the non-watermark contract:

1. More anti-counterfeiting. Watermark has certain anti-counterfeiting and identifiability, which can effectively prevent the contract from being tampered with or copied.

2. Better confidentiality. Watermark can be designed for different customers or partners, highlighting the corporate image, and it is not easy to be imitated or fraudulently used.

3. More credible. Watermark can visually increase the weight of the contract content and make the signer pay more attention to the contract terms and attached documents.

4. Highlight the professional image. For some well-known enterprises and institutions, signing a watermark contract can also reflect the professional and technical strength of the enterprise. It should be noted that the watermark is not necessary when signing the contract, and whether to use the watermark according to different situations is determined by both parties through independent consultation. At the same time, whether it is a watermark contract or a non-watermark contract, the authenticity of the contract content and signing method is the most important.