首页>
外国专利>
A process for the representation of a percent íñª '- dihalo - a percent íñª' - dianthrachinonylen and a percent íñª '- bz - - - diphthaloylnaphthalinen 1íñ2íñ5íñ6 dihalo
A process for the representation of a percent íñª '- dihalo - a percent íñª' - dianthrachinonylen and a percent íñª '- bz - - - diphthaloylnaphthalinen 1íñ2íñ5íñ6 dihalo