Hello, I'm Seoul. Unfortunately, I am in Xi 'an. SEO optimization can find some companies that do online marketing. SEO is a kind of SEM. Optimization is very important. In order to keep the ranking simple, it is important to enrich the content of the website. From the perspective of network marketing, the conversion rate of customers is more important. You have to figure out what seo is. Many people don't know what it is, so how can I help you! It is cheaper to build a website now, generally about 500 RMB. Before I found a special SEO studio in Baidu, the efficiency was not bad. You can contact and try. This is the address.