The archaeological data shows definitely that the glaze,texture-hard, low sop up Protoporcelain had been fired in the Shang Zhou period since three thousand years before.

• 考古资料明确表明，早在3000多年前，我国商周时期，已经烧制出器表挂釉、质地坚硬、吸水率甚低的原始瓷器。