Sinovac Biotech, which was formerly known as Net Force Systems Inc. until November 1999, operates in the pharmaceutical preparations industry with a focus on vaccine development and production. The company maintains its principal executive offices at No. 39 Shangdi Xi Road in Beijing's Haidian District. In other recent news, MAG Silver Corp (TSX: MAG ) has announced significant amendments to its arrangement agreement, as disclosed in a filing with the Securities and Exchange Commission. The amendments, which are detailed in several exhibits, suggest potential impacts on the company's operations and future strategies. These changes are accompanied by a notice of a special meeting and other related documents, indicating a significant corporate action that may require shareholder approval.