Recommended cotton for core yarn of XLA depends on the varied used of XLA fabric. Typically, for core yarn of medium-to-high grade weaving XLA fabric, it is recommended that
　　1. PIMA Cotton;
　　2. XinJiang long-staple cotton;
　　3. Combed Cotton (first class cotton primary), cover with rove lower than 40s count
　　4. For denim fabric yarn, common combed cotton can be use.
　　Note: pay attention to exposed core, XLA should be tightly covered, carefully select the covering yarn and draft rate.