TOB terracotta panel use “230M/7H” top-firing process, grown up on a “long, close, excellent, beautiful” curtain wall construction material, presenting the architectures’ broad mind and brilliant ideas. Each piece of terracotta panel experiences “fine turning of 9 days each side “, “Mineral color mixing,” “digital control”, “big loop operation”, “wave, air, fire three paragraphs dry” and so 10 processes before the key firing process in the kiln. The klin which fire out the “Asian terracotta panel” is the world´s longest kiln of 230-meter-long, subdivided into 12 temperature zones to achieve uniform heating.