Another difference between Chinese sock yarn and foreign sock yarn is the quality. Foreign sock yarn is known for its high-quality fibers, which is why it is often more expensive than Chinese sock yarn. The wool used in foreign sock yarn is often sourced from countries like New Zealand or Australia, known for their superior quality wool. This means that foreign sock yarn is softer, stronger, and more durable than Chinese sock yarn.

The dyeing process of Chinese sock yarn and foreign sock yarn can also differ. Foreign sock yarn is often hand-dyed in small batches, resulting in unique and vibrant colors. Chinese sock yarn, on the other hand, is often machine-dyed, resulting in more uniform and predictable colors.