SEMI is an industry association comprising companies involved in the electronics design and manufacturing supply chain.

[1] SEMI is headquartered in Milpitas, California, and has offices in Bangalore; Berlin; Brussels; Hsinchu; Seoul; Shanghai; Singapore; Tokyo; and Washington, D.C.[2] Its main activities include conferences and trade shows, development of industry standards, market research reporting, and industry advocacy.

[5][6] SEMI Global Advocacy represents the interests of the semiconductor industry's design, manufacturing and supply chain businesses worldwide.

[7] SEMI Global Advocacy[8] focuses on five priorities: taxes, trade, technology, talent, and environment, health and safety (EHS).

The standards are developed and maintained by over 5,000 volunteer experts representing more than 2,000 companies, working in 23 technical committees and 200 task forces.

[20] Part of this focus was to work with governments to reduce trade barriers and develop “a sympathetic regulatory climate”[23] for its member organizations—companies that sold equipment and materials to firms that produce microprocessors.

[24] Today SEMI organizes and produces nearly 100 technology showcases, trade shows, conferences and special events per year in all of the major manufacturing regions of the world.

They include trade shows in China, Japan, Germany, Singapore, South Korea, Taiwan, North America, and Europe, as well as executive conferences, technical programs, and standards meetings.

[26] Its billing data is considered an important leading indicator of demand trends and is closely watched within the industry and by semiconductor market analysts and investor.

SEMI Smart Initiatives build activities around promising electronics markets emerging from mass digitalization in the Fourth Industrial Era.