| Rizhao Haitong Silk Co. Ltd, Rizhao, China | (中文版 Chinese Version) |
 The silk cocoon is created by the silkworm, which feeds off mulberry tree leaves in subtropical climates. At the factory the bad silk cocoons are separated from the good. |
 The Chinese were the first to develop cultivated silk fabric 5000 years ago. The process was kept secret for millennia. |
The cocoons are boiled to loosen the thread, or filament. The silkworms are killed in the process. |
 The silk filament is then reeled onto spools. Several filaments are spun together to make yarn. |