The porcelain is delicate, crystal and jade, the color is soft and subtle, and the style is elegant and refined. Zhangzhou Yingbai porcelain can be described as “blue out of blue and better than blue”, with its own style and unique quality.

The quality technical requirements of Zhangzhou Yingbai porcelain (1). Sculpture white porcelain, daily-use white porcelain. (2) Raw material production. 1. Raw material composition: kaolin, porcelain stone, feldspar, quartz, etc. The main features are Fe2O3, TiO2 and so on. The chemical composition range is shown in the following table: Raw material name Chemical composition range SiO2Al2O3K2ONa2OCaOMgOFe2O3TiO2 Caustic kaolin ≤48.0≥37.0≥0.5≥0.5≤0.4≤0.2≤0.5≤0.1≥14.0 Porcelain ≤81.15≥10.83≥3.14≥0.05≤0.14≤0.27≤0.51 ≤0.15≤3.46 feldspar ≤68.98≥16.73≥10.55≥2.78≤1.5≤0.5≤0.24≤0.05≤1.67quartium≥98.5≤0.50.20.15≤0.05≤0.52. Raw material processing: soft material beaten, panned; hard The material is pulverized, and then ball milled, sieved, iron-removed, and aged to form a slime. The billet fineness exceeds 250 mesh and the remaining amount is less than 0.5%, and the plasticity index is greater than 2.5. (3) Forming process. 1. Sculpture class: manual molding, grouting, roll forming, etc. 2. Daily use: According to different product types, manual molding, mechanical forming, and grouting are used. (4) Glazing. 1. Sculpture: The glazed porcelain products are glazed by immersion glaze, glaze, spray glaze, glaze, etc. The glaze layer is thick and thin. 2. Daily use class: According to different product types, glaze method, such as glaze, dip glaze, glaze, spray glaze, etc., are used, and the glaze layer is even and thin. (5) Burning. 1. One-time firing: 1300 ° C to 1400 ° C high temperature firing. 2. Secondary firing: 800 ° C to 900 ° C low temperature burning; 1300 ° C to 1400 ° C high temperature glaze burning. (6) Quality characteristics. 1. Sensory characteristics: clean as jade, slippery like fat, bright as Ying. The porcelain is fine, the glaze is soft, translucent and clean, like ivory, and like the white jade. 2. Physical and chemical indicators: (1) Water absorption rate: ≤0.5%. (2) Thermal stability: The daily-use porcelain is heat-exchanged from 180 ° C to 20 ° C without cracking. (3) Whiteness: ≥69.3. (4) Microstructure: quartz crystal content is 7% to 15%, mullite content is 20% to 30%, and glass phase content is 55% to 65%. 3. Safety requirements: Product safety indicators must meet the relevant regulations of the state for similar products.

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Producers within the scope of protection of Zhangzhou Yingbai porcelain geographical indication products may apply to the Zhangzhou Entry-Exit Inspection and Quarantine Bureau for the use of the “Special Mark for Geographical Indication Products”, which shall be approved by the Zhejiang Entry-Exit Inspection and Quarantine Bureau and approved by the AQSIQ. . The statutory testing agency of Yinzhou Yingbai Porcelain is designated by Zhejiang Entry-Exit Inspection and Quarantine Bureau.