Brochures are an important part of any corporate atmosphere. They promote your business and share important information with employees, clients and associates. Attract more customers with one or more colors brochures that will create an outstanding first impression for your company. The common brochures size would be A3 when opened and folded into A4 size. If there is more information, you can opt for a bigger size which is 3(A4) or 4(A4). Identify your folding needs. They are plenty of folding methods you can choose from.