11. Why products are divided into superior products and quality products, what is the difference? A: China's building materials standards based on surface quality ceramic products can be divided into superior products and qualified two levels; general superior product requirements brick vertical distance of 0.8 m away indecent no surface defects observed where the best antique tiles, qualified observe 1.5M distance away. Common ceramic pinhole defects, bubbles, jump points, falling dirt, distortion, chromatic aberration, cracks, touch glaze, chipping, and other impurities. Qualified defect situation may be different in different batches. Antique brick facades can not be done? Answer: yes. Like Li Xin Building Materials Co., Ltd. Guangdong Kaiping production of "Ai Li Xin Ceramics" it has a high-grade, high-taste, easy to smoke pollution, does not change the color. However, when the factory orders to note is the way to do exterior walls, as do wall hanging to increase in thickness. Antique brick structure, antique tiles, refractories plant Zhoucun Owen by Owen refractories plant Zhoucun. Zhoucun Owen refractories plant (www.fanggumianzhuan.com) strong, credible, Shandong Zibo fire-resistant, fire prevention materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Zhoucun Owen refractories plant and you work into the brilliant, for a better future!