[国外标准] JIS K1603-3-2007 Plastics -- Aromatic isocyanates for use in the production of polyurethanes -- Part
[国外标准] JIS K1603-2-2007 Plastics -- Aromatic isocyanates for use in the production of polyurethanes -- Part
[国外标准] JIS K1603-1-2007 Plastics -- Aromatic isocyanates for use in the production of polyurethanes --Part