Blue and white porcelain pen is also called the ceramic pen, white porcelain firing, was developed in 2009 pure ceramic firing pen; The blue and white porcelain pen on the market is divided into tile-like pen and true porcelain penBlue and white porcelain pen is also called the ceramic pen, white porcelain firing, was developed in 2009 pure ceramic firing pen; The blue and white porcelain pen on the market is divided into tile-like pen and true porcelain pen