| 英文名称: | | 4-butanediyl), alpha-hydro- omega -hydroxy-poly(oxy- polymer with hydroxy-te | | rminated polybutadiene and 1,1'-methylenebis[4-isocyanatobenzene] | | 4-butanediyl), alpha-hydro- omega-hydroxy-poly(oxy- polymer with hydroxy-terminated polybutadiene and |
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