有研粉材：关于自愿披露两家所属公司入选工信部第七批专精特新“小巨人”企业的公告

Group 1 - The core point of the article is that Youyan Powder Materials Co., Ltd. announced that its subsidiaries, Youyan Nano Materials (Beijing) Co., Ltd. and Youyan Additive Technology Co., Ltd., have been included in the Ministry of Industry and Information Technology's seventh batch of "Specialized, Refined, Special, and New" small giant enterprises list [1] Group 2 - The announcement was made on the evening of November 18 [1] - The recognition is based on the official release from the Beijing Municipal Bureau of Economy and Information Technology [1] - This inclusion highlights the company's capabilities and innovation in the specialized materials sector [1]