China, YB/T4001.1-2007 standard (China is the latest version of the steel plate standard in 2010); In addition, the United States, the United Kingdom, Australia and New Zealand also have their own standards, can also be in accordance with British BS4592-1-1995 and the United States ANSI/NAAMM Standard production such as (MBG531-88). The steel standard is implemented in accordance with GB700-88 and GB1220-92. According to the announcement of the US Department of Commerce, Chinese producers and exporters will be subject to an anti-dumping duty of up to 145.18%. According to the announcement, from 2006 to 2008, steel grids exported from China to the United States surged by 538.44%. In 2008, China exported steel grids to the United States worth about $90.7 million.