| 英文名称: | | 1,4-butanediol, polymer with alpha-hydro-omega-hydroxypoly(oxy-1,4-butanediyl) | | and 1,1'- methylenebis(4-isocyanatocyclohexane) | | ) and 1,1'-methylenebis[4-isocyanatocyclohexane] | | polyurethane y-223 | | tecoflex hr | | y 223 | | 1,4-butanediol, polymer withalpha-hydro-omega-hydroxypoly(oxy-1,4-butanediyl) and 1,1'-methylenebis(4-isocyanatocyclohexane) |
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