Fancy yarn
　　Fancy yarn is a yarn with special structure and appearance effect obtained by using special raw materials, special equipment or special technology to process fiber or yarn in the process of spinning and yarn making, and it is a kind of yarn with decorative effect in yarn products.
　　Almost all natural fibers and common chemical fibers can be used as raw materials for the production of fancy yarns. Fancy yarns can be made of silk, silk press, silk, rayon, cotton yarn, linen yarn, synthetic silk, gold and silver yarn, blended yarn, human cotton, etc. as raw materials.
　　Various fibers can be used individually or mixed with each other to complement each other's strengths and make full use of their inherent characteristics.
　　Fancy yarn classification
　　Fancy yarns can be broadly classified into the following categories according to their processing methods:
　　First, fancy yarn processed by common spinning system
　　Such as chain yarn, gold and silver yarn, silk yarn, etc;
　　The second is the fancy yarn processed by dyeing method
　　The second is fancy yarns processed by dyeing methods, such as mixed yarns, printing yarns, rainbow yarns, etc;
　　Third, fancy yarns processed by fancy twisting machines,
　　According to the different feeding speed of the core and trim threads, they can be divided into super feeding type such as spiral thread, pigtail thread, loop thread and control type such as big belly thread, knotted thread, etc;
　　Fourth, special fancy line
　　Such as chenille thread, core wire, brushed wire, flocked wire, etc.
　　Fancy yarns have a fancy appearance for decoration, and there are many varieties and production methods. Dyeers Without Borders has introduced many of them.
　　The structure of fancy yarn is composed of core yarn, decorative yarn and solid yarn.
　　The core yarn bears the strength and is the main yarn; the decorative yarn is twisted and wrapped around the core yarn to form the effect; the solid yarn is wrapped around the decorative yarn with the opposite twist direction to fix the pattern, but there are cases where the solid yarn is not used.
　　Fancy yarn classification method 2
　　There are more than ten types and thicknesses of yarns, and we would like to briefly introduce some common yarns.
　　Extra-fine is the finest of the knitting yarns. It is light and soft, and is most suitable for knitting sweaters for babies and children or for crocheting women's coats.
　　Very Fine The coarsest of the two finest yarns, it is light and has a wide variety of colors, and is best suited for crochet.
　　Medium Fine This is the most commonly used type of wool for babies, toddlers, women's and men's clothing, and produces a delicate and elegant pattern.
　　Medium coarse is the most common type of wool used to knit cold-weather clothing, which is not too thick and not too thin.
　　High coarse is also the best yarn for cold-weather clothing.
　　Nowadays, the products can be divided into pure wool, blends and chemical fibers.
　　The main chemical fiber is acrylic and viscose fiber.