What's the difference between sp-68 fabrics from Shanghai dealers and those from South Korea?
The same. SP-68 was made in Korea before, but now the relationship between China and South Korea is tense, so there are production workshops in Shanghai and Guangzhou. South Korea's SP-68 magic pants are also made in China, and a small part of them are made in Korea, because other series of SP-68 magic pants are still made in Korea.