Second-line brand. Colorful impression tiles are medium and high-grade tiles with strong technical force. They also introduced an Italian automated production line, which was finally designated as a second-line brand after being audited by the market supervision bureau. Ceramic tile is an acid and alkali resistant ceramic or stone, building or decorative material, which is made of refractory metal oxide and semi-metal oxide through grinding, mixing, pressing, glazing and sintering. It is called a tile.