Can't. At present, nine Zi catering did not apply for trademark patents, so currently can not join. Catering company trademark did not come down can not join, the trademark is the producer of goods, operators in their production, manufacturing, processing, picking or distribution of goods or service providers in the services provided by the use of the source of goods or services for the distinction between the text, graphics, letters, numbers, three-dimensional signs, sound, color combinations, or a combination of the above elements, with distinctive features of the sign, is the product of the modern economy.