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Chester County’s West Pharmaceutical Services helps deliver COVID-19 vaccines. So business is booming.

The company expects more than 10% of its more than $2 billion in revenue this year to come from COVID-19-related products.

West Pharmaceutical Services Inc., based in Exton, says it is the world's largest manufacturer of rubber stoppers used to seal vials of vaccines and other injectable medicines. The company does not disclose the names of specific customers, but the company's CEO said West is "involved with basically all the vaccines that are in the market." Here vials of COVID-19 vaccine thaw before a vaccination clinic at the Skippack Fire Co. in Skippack, Pa. in February.
West Pharmaceutical Services Inc., based in Exton, says it is the world's largest manufacturer of rubber stoppers used to seal vials of vaccines and other injectable medicines. The company does not disclose the names of specific customers, but the company's CEO said West is "involved with basically all the vaccines that are in the market." Here vials of COVID-19 vaccine thaw before a vaccination clinic at the Skippack Fire Co. in Skippack, Pa. in February.Read moreMONICA HERNDON / Staff Photographer