F4 plywood means the plywood meet F 4-star requirements which.
F4 plywood means the plywood meet F 4-star requirements which is the top Formaldehyde Emission grade for plywood, fiberboard, MDF, OSB, HDF, wood furniture and other wooden product
F4 means F☆☆☆☆ or F 4-star or F Four-star, which is the top Formaldehyde Emission grade for plywood, fiberboard, MDF, OSB, HDF, wood furniture and other wooden products according to Japanese standard JIS A 1460 (2005) Building Boards Determination of formaldehyde emission – Desicator method.
JIS A 1460 (2005) is a part of JAS (Japanese Agricultural Standard) which is published by Ministry of Agriculture, Forestry and Fisheries (MAFF Japan).
JIS A 1460 (2005) sets four grades for Formaldehyde Emission value . F☆☆☆☆ is the highest Formaldehyde Emission grade according to JIS A 1460 (2005). F4 plywood means the plywood can meet the F☆☆☆☆ grades of Formaldehyde Emission according to JIS A 1460 (2005). F4 plywood is the lowest Formaldehyde Emission plywood which can be used interior without limitation.
JAS Formaldehyde Emission grades: Grades (Rating) Average Value Max. Value F☆☆☆☆ 0.3mg/L 0.4mg/L
F☆☆☆ 0.5mg/L 0.7mg/L
F☆☆ 1.5mg/L 2.1mg/L
F☆ 5.0mg/L 7.0mg/L
Note: These values are achieved through Desiccator Test.
Shandong Fortuna International Trade Co., Ltd. Founded in 1990s in linyi city , It is one of the largest wooden panel manufacturers in China. Mainly exports Plywood ,Film Faced Plywood , Melamine boards, MDF ,OSB Boards for global importers, furniture factories, construction companies and building material wholesalers.
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