The special terms and conditions of the construction project are not signed and sealed.

Does the subject want to ask, "Why are the special terms for construction projects not signed and sealed?" There are problems in the establishment and performance of the contract.

1. Signature and seal is an important proof of the establishment of the contract. Because both parties have not signed and sealed the special terms and conditions, whether the contract is really established is controversial.

2. Signature and seal is the way to confirm that both parties agree to the contents of the contract. Lack of signature and seal will lead to ambiguity in the understanding and implementation of the contract terms, and inconsistency or dispute between the two parties in the performance of the contract.