It looks like Alibaba (Chinese giant) is also tracking products using a blockchain. See:
https://captainaltcoin.com/alibaba-continues-to-adopt-blockchain-for-product-tracking-through-its-subsidiaries/TMall – owned by Alibaba – will be adopting blockchain technology to make international payments in its supply chain, as well as to track products throughout its distribution chain.
TMall’s intention to adopt blockchain comes as a result of an alliance with the logistics company Cainiao, of which Alibaba is also a shareholder, and which has recognised the potential of blockchain for international e-commerce.
The information, reported by the Xinhua news agency, has not yet been officially confirmed by the company. But it is alleged that distributed accounting technology could be used to record information concerning the import and export of products, such as country of origin, time of arrival at port, methods and time of storage and transport, as well as other aspects of this activity so important to China’s economy.
That just leaves Amazon to adopt blockchain tracking - perhaps they've got plans in the works?