We developed for our client solution that can be used as Aliexpress API. Solution provides alternate access to Aliexpress data (via web scraping).
Aliexpress gives official access to data via Web API. It means that you could get products into from aliexpress site and to publish it on your site, manage orders. Why is it important?
It is important because you could receive real-time data from aliexpress web site and your offers will be in an actual state with right prices & quantities. So if you use Aliexpress API you do not need to do web scraping and purchase tons of proxies for scraping aliexpress web site.