PharmaResources (Kaiyuan) Co., Ltd, the subsidiary of PR., is located in Kaiyuan City, Liaoning Province. PR Kaiyuan), is a GMP certified manufacturer with a pilot plant of 60,000 square meters.  The plant is focused on the R&D, manufacture (including CMO service) and sales of advanced intermediates and APIs that are highly demanded in the global market.  PharmaResources (Kaiyuan) has several commercial products including Ticagrelor API and intermediates, Levocarnitine API, Peramivir intermediates, Velpatasvir intermediates, Sofosbuvir intermediates etc., some of which have obtained COS certificate of EU and certificates from other countries. .