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Blockchain, an open, distributed digital database for any transaction involving money, goods, property and more provides a high level of security by creating a record whose authenticity can be verified by the whole community.

Borrowing to cover operations could be risky because money raised through the sale of bonds wouldn't be used to upgrade physical assets such as signals, stations or purchase new subway cars or buses.

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Borgward has also released a strategy called "Energy of Twins", which means it will work on both gasoline cars and electric models.

Borrowing from Germany's Industry 4.0 strategy, manufacturing is getting smart