General items: sales of Class I medical devices; Category II medical device sales; Sales of sanitary supplies and disposable medical supplies; Commodity sales; Research and development of hardware products; Hardware product manufacturing; Retail of hardware products; Manufacturing of industrial textile products; Sales of industrial textile products; Jewelry manufacturing; Jewelry wholesale; Manufacturing of non-metallic mineral products; Sales of non-metallic minerals and products; Manufacturing of arts and crafts and ceremonial articles (excluding ivory and its products)