The present invention relates to a laser diode and the preparing method and the product line thereof.
本发明涉及一种激光二极管及其制造方法和生产线。
The invention disclosed the preparing method of selective hydrogenating catalyst of unsaturated hydrocarbon.
本发明公开了一种不饱和烃选择性加氢催化剂的制备方法。
The titer of the gardenia yellow pigment obtained by the preparing method of gardenia yellow pigment is high.
本发明栀子黄色素的制备方法获得的栀子黄色素效价高。
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