u can select up to 5 categoriPlease choose the most appropriate category of products you wish to sell from the list provided by EC21. You can click ‘Add’ and choose categories in 3 steps. You can add up to 5 categories from 900 different product categories. es.Please fill out detailed information. (HTML not supported) Please enter specific description of your company including company profile, activities, achievement products, services and etc. Please make sure to include only the description of the company without any contact information including phone number and E-mail address. E-mail address cannot be inserted here to protect you from getting spam E-mails.