Whether the Shanghai Tourism Contract Company’s bottom line is white or blue?

Blue.

1. The contract left by the Shanghai Tourism Contract Company is printed out on blue carbon paper. Blue carbon paper is a special carbon paper specially used for printing contracts, receipts and other important documents. It has features such as anti-counterfeiting and tamper-proofing, and can ensure the authenticity and legality of the contract.

2. After the contract is signed, the Shanghai Tourism Company will keep the blue carbon paper for the company's record, and the customer can take away a white carbon paper as a copy of the contract, so the Shanghai Tourism Contract Company What remains is blue.