Du'an calligraphy and painting paper is the wonderful treasure of the Miluotuo culture. The Yao people use the high-quality papermaking materials of the Shishan Kingdom, blending ancient papermaking techniques and modern pulp and paper technology to produce high-end for books, painting, enamel, and extension. Painting and calligraphy paper has long been favored by painters at home and abroad.

Duo's quality and technical requirements for painting and calligraphy paper 1. Raw material requirements 1. Longsha grass: The local growth of Eulaliopsis binata that was harvested and dried in the same year. 2. Water: Groundwater containing trace minerals in the area of ​​origin. (1) Water for pulping: weakly alkaline (pH 7.1 to 7.5) (2) water for papermaking: weakly acidic (pH 6.5 to 6.9) 2. Technical requirements for production process The traditional main production process is :Selecting materials, preparing materials, cutting grass, pre-dipping, cooking, screening, washing, bleaching, washing, bleaching, washing, sand removal, dewatering, refining, bathing, adding paper (glue), hand-pulling, pressing Water, crepe paper, stickers, handmade paper, manual inspection, inventory, packaging. Third, storage requirements Products should be stored in a cool, dry, ventilated warehouse; open-air stacking, sun exposure, rain or close to heat sources. Fourth, the quality characteristics 1. Sensory characteristics: paper cotton tough, feel soft and smooth, paper surface is flat, there are faint bamboo curtain lines, cut edges neat and clean, no offset on paper, cracks, holes, sand and attachments The 瑕疵 used. 2. Physical and chemical indicators: serial number index name index value 1 tightness (0.35 ± 0.05) g / cm32 water absorption vertical and horizontal average ≥ (18-35) mm / 60s3 wet tensile strength vertical and horizontal average ≥ 320mN4 aging resistance brightness (absolute value) decreased ≤6.5% 3. Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

Apply to：
Producers within the scope of production of Duan calligraphy and painting papers may apply to the Industrial and Commercial Administration and Quality and Technical Supervision Bureau of Du'an Yao Autonomous County for the use of “Special Marks for Geographical Indication Products”, which are reviewed by the Guangxi Entry-Exit Inspection and Quarantine Bureau and reported to the General Administration of Quality Supervision, Inspection and Quarantine. Announced after approval. The inspection organization of Duan calligraphy and painting paper is selected by the Guangxi Entry-Exit Inspection and Quarantine Bureau in the inspection institutions that meet the qualification requirements.