1. Intellectual Property Rights: Required when the purchase includes items with associated intellectual property

2. Confidentiality: Needed when sensitive information is exchanged during the transaction

3. Insurance: Relevant when specifying responsibility for insurance during transit or storage

4. Force Majeure: Optional clause for handling unforeseen circumstances preventing performance

5. Assignment: Required when addressing whether rights under the contract can be transferred

6. Inspection Rights: Important for high-value items where buyer wishes to inspect before completion

7. Installment Payments: Required when payment is to be made in multiple installments

8. Security Interests: Needed when seller retains security interest until full payment

1. Technical Specifications: Detailed technical description of the purchase object

2. Condition Report: Detailed description of the current condition, including any existing damage or wear

3. Payment Schedule: Detailed breakdown of payment installments and due dates, if applicable

4. Photographs: Visual documentation of the purchase object

5. Authenticity Certificates: Any relevant certificates or documentation proving authenticity

6. Maintenance Records: Historical maintenance or repair records, if relevant

7. Transfer Documents: Any additional forms or documents required for legal transfer of ownership