What kind of stamp duty does the installation contract of protective equipment for civil air defense projects belong to?

Civil air defense engineering protective equipment installation contract belongs to purchase and sale, processing contract, construction engineering survey and design, construction engineering contract, property lease, cargo transportation, warehousing, loan, property insurance, technology contract or this kind of stamp duty with contractual nature.

1. Stamp duty category: purchase and sale, processing contract, construction project survey and design, construction project contract, property lease, cargo transportation, warehousing, loan, property insurance, technology contract or contract.

2. Stamp duty Category II: documents of property right transfer.

3. Stamp Duty Category III: Business Books.

4. The fourth category of stamp duty: house property right certificate, industrial and commercial business license, trademark registration certificate, patent certificate, land use certificate and license.

5. Five types of stamp duty: other vouchers determined by the Ministry of Finance for tax collection.