Bottom slot green 【Kiln temperature】 about 1180 degrees 【Shrinkage ratio】about 12% 【Mine Origin】Well No. 4 in Huanglongshan has been closed in recent years due to misfortunes. There is an increasing shortage of ore resources. The residual accumulation of weathered "bottom green" is becoming more precious 【Mudiness】 Because of the bottom layer of purple sand, the bottom groove green is ultra-pure, the mud is fine, the color is stable, and it is brown