West Pharmaceutical Services, Inc. has increased its equity stake in Daikyo Seiko, Ltd. to 49 percent. West and Daikyo have partnered for more than 40 years to develop and manufacture high-quality components and solutions for the primary containment and delivery of injectable medicines. The companies long-standing agreements include a distribution agreement, under which West distributes and markets Daikyo products globally, on an exclusive basis, as well as a technology exchange and cross lic...