According to The Wine Industry Advisor

Premium Port Wines, the US importer of leading Port producer Symington Family Estates, is pleased to announce Vintage and Fine Wines, an online retail space offering the finest Ports, Madeiras and Douro table wines direct from the producers’ cellars in Portugal. The online store is currently open for purchases and shipping within the state of California.

Symington Family Estates’ US online portfolio focuses on their esteemed Port houses: Graham’s, Cockburn’s and Dow’s as well as their wine brands from the Douro Valley of Portugal, including Quinta do Vesuvio and Prats & Symington. In 2017 they launched a new venture, Quinta da Fonte Souto, in the Alto Alentejo. 

Read more at source: Wine Industry Advisor