[years] when the age of the trees dyed blue dye students Xuan bamboo paper fan blue gradient

Purple bamboo stem ripening fan, blue dyeing system https://img.alicdn.com/imgextra/i4/2340908250/TB2JFuvrVXXXXcfXpXXXXXXXXXX_!!2340908250.jpg https://img.alicdn.com/imgextra/i1/2340908250/TB2UZyPrVXXXXahXpXXXXXXXXXX_!!2340908250.jpg https://img.alicdn.com/imgextra/i1/2340908250/TB2NB5vrVXXXXcyXpXXXXXXXXXX_!!2340908250.jpg Origin / manufacturing methods Made in Xiamen handmade