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Is the cover of Ryoma Echizen qualified?

Qualified. According to Ryoma Echizen official website, Ryoma Echizen is a brand of Guangzhou You Xiang Stationery Co., Ltd., which takes the design of healthy stationery as its brand concept and devotes itself to healthy learning products for teenagers. Ryoma Echizen's book cover is made of upgraded environment-friendly PP material, with no peculiar smell, good workmanship, very smooth and flat, and no burrs.