Is there a forum website that introduces knitting materials?

1. Your question is very professional. You'd better go to China Textile Network Forum to ask.

Second, your question is the definition of basic sensibility and fiber.

1, 2070 wrapped yarn, 70D polyester or nylon wrapped 20D spandex can increase the elasticity of the fiber.

2、70D/48F

70D means: 9000m long and 70g heavy, and it is defined as 70D (defined by chemical fiber Daniel).

48F means that the spinneret for producing chemical fiber has 48 holes. In other words, this bundle of 70D fibers consists of 48 fibers. In addition, if 70D/96F is superfine fiber.

3. Definition of cotton yarn (Ne, count, s): 454 grams of cotton can be spun for 40,840 yards, which is 40 seconds. Obviously, 60s is thinner than 40s.

(Supplement: Definitions are all tested in the standard state)

The above is the basic information of fiber, please take your time to understand.

Good luck!