1) Whenever you pay cheaply for anything made in any third world country, you're externalizing the societal cost of pollution to that country (and if it gets into the oceans, to everyone). In other words, you're not paying the true cost of that item--economically and to society and the environment.
2) As linked elsewhere: first world nations often export their trash to third world nations, masquerading as recycled materials - see spat with Philippines - https://www.cbc.ca/news/technology/canadian-garbage-from-phi...