ANSI Standard (American National Standards Institute)

ANSI standards are voluntary national standards developed and published by the American National Standards Institute. In foreign trade, ANSI standards are commonly applied to mechanical, electronic, electrical, construction, and chemical products intended for the U.S. market, indicating that products meet U.S. safety, performance, or quality requirements. Usage scenarios include: stipulating in contract technical annexes that products must comply with ANSI standards, product certification (such as ANSI/UL, ANSI/ASME), and importers requiring suppliers to provide ANSI compliance certificates. Notes: ANSI standards are mostly voluntary in nature, but become mandatory if referenced by law or stipulated in contracts; ANSI standards are often used in conjunction with UL, ASTM, IEEE, etc., such as ANSI/UL 60335; unlike ISO standards, ANSI focuses more on the U.S. market, requiring special attention when exporting to the United States. Differences: ISO is internationally applicable, while ANSI is at the U.S. national level; the two differ in electrical voltage, plug shapes, testing methods, etc. In foreign trade, the specific standard number and version year must be clearly specified.