700 yuan. Before the emergence of the company, the sole proprietorship was the most typical form of business. Coexisting with the sole proprietorship were various partnership organizations. The most typical partnership organization at that time was the family business group. According to relevant information, starting a chemical sales company requires an investment of 700 yuan, including a seal engraving fee of 200 yuan, a bank account fee of 300 yuan, and a company registration fee of 200 yuan. Company registration must have a registered address and it must be for commercial or industrial purposes. A residence cannot be used as a registered address, and a property certificate and a lease agreement are required.