Years ago, Tatung manufactured motherboards for HP and Compaq as well as monitors for IBM. Its subsidiary Taiwan Telecommunication Industry Company (TTIC) has made American-style payphones for ATTT and plasma and LCD TVs for American and Japanese companies such as HP, JVC, and Wal-Mart. In recent years, it has also signed deals to manufacture desktop computers for the Chinese company Haier. It now touches on all areas digital.
大同早年是 HP 及 Compaq 個人電腦主機、IBM 監視器等的代工大廠；子公司台通（台灣通信工業公司）替 AT&T 代工美式公共電話，又接獲 HP、JVC、威爾瑪（Wal-Mart）等美日廠的電漿電視、液晶電視大單，近年又敲下中國大陸「海爾」桌上型電腦代工訂單，儼然全方位的數位電子產品代工者。