loose leaf packages sold for one calendar year. Kokuyo's loose leaves are sold all over the world, and can be found in North American and European markets. Lihit Lab produces a special type of loose leaf, with rectangular holes (instead of round ones) with non-standard spacings. Lihit Lab sells special ring binders to fit its loose leaves. Maruman manufactures and sells a special size called Mini B7 (ミニ size, 86 x 128 mm). Mainland China Many loose leaf products are imported from Japan to mainland China. Kokuyo sells Chinese market-specific versions of pre-printed calendar loose leaf packages. Taiwan SEASON (四季纸品礼品) is a major manufacturer of different sizes of loose leaves in Taiwan. History Two early applications of looseleaf binding were Nelson's Perpetual Loose Leaf Encyclopaedia (1907) and legal textbooks updated through a looseleaf service (1914). See also Filler paper Ruled paper Genkō yōshi Graph paper Hole punch Post-it note Paper size Ring binder References History of Size International standard paper sizes Pre-Industrial Papermaking External links Printing and writing paper