The owners of supply-chain services company Syncreon Holdings are exploring a sale of the company that could value it at as much as $1.5 billion, including debt, according to people with knowledge of the matter.The owners of supply-chain services company Syncreon Holdings are exploring a sale of the company that could value it at as much as $1.5 billion, including debt, according to people with knowledge of the matter.Read MoreTransport Topics