The main manufacturing industry in Hawaii is the food processing industry with refined sugar and canned pineapples being the leading exports. Other major industries include clothing, clay and glass, stone, fabricated metals and shipbuilding. According to a U.S. Census Bureau survey in 2004, food manufacturing accounted for about $1.066 billion in value of manufactured products. It was followed by nonmetallic mineral product manufacturing at $206.697 million.
In terms of the employment capacity of Hawaii's manufacturing industry as of 2004, the food processing industry employed about 4,773 workers. It was followed by the printing and related services industry with 1,569 employees, and apparel manufacturing was next with 1,456 employees. According to the Hawaii Tourism Authority, Hawaii offers exclusive items that can't be found anywhere else in the world. These items include aloha wear, art, woodwork, jewelry and indigenous food. The term aloha shirt was trademarked in 1937 after which the popularity of aloha wear across the world grew exponentially. In modern times, the iconic aloha shirt is regarded as a symbol of the cultural diversity and unification of Hawaii's multiethnic population, and it is worn by almost everyone from beach boys to successful businessmen. Wood workers in Hawaii use Koa, which is found only in Hawaii, to create valuable items such as jewelry.