Why is there cheap sales in China's coffee market?

There are several reasons why cheap coffee bean sales exist in the Chinese market:

1. Coffee beans of international futures standard quality are not used, but old green beans, or inferior green beans are mixed; China (including Hong Kong and Taiwan) currently does not have any company participating in trading on the international coffee futures market;

2, all domestic coffee beans packaging use non-international standard packaging materials and non-Swiss patent one-way exhaust valve, because China has not yet issued a national standard for coffee bean packaging materials;

3, expired coffee beans re-packaging or ground into coffee powder packaging, inferior for sale;

4, the use of a large number of relatively cheap Robster beans, thereby reducing costs, while ignoring quality.

There was once a domestic coffee bean manufacturer joked that imported coffee beans roasted into coffee beans can be stored for 18 months; if they can't be sold, they can be ground into powder and stored for another 18 months; if the powder can't be sold again, they can be made into canned coffee drinks and stored for 18 months. Can the above jokes also reflect the embarrassing situation of the Chinese coffee market?