Company Overview - Grinda Electronic Materials Co., Ltd. was established in October 2001 and is a high-tech enterprise specializing in customized wet electronic chemicals and related services and solutions [1] - The company is a subsidiary of Hangzhou Electric Chemical Group, which is recognized as a national first-level safety production standard enterprise [1] - Grinda's main customers include industries such as flat panel displays, photovoltaic panels, and chip manufacturing, with key products including positive and negative photoresist developers, various etchants, stripping solutions, and dilution/cleaning solutions [1] Shareholder Information - In the latest financial report, three funds under Invesco Great Wall entered Grinda's top ten shareholders, holding a total stake of 1.04% [1] - The funds include Invesco Great Wall Electronic Information Industry Stock A, which reduced its holdings in the fourth quarter of last year, Invesco Great Wall Long-term Holding Mixed A, which also reduced its holdings, and Invesco Great Wall Environmental Advantage Stock, which similarly reduced its stake [1] Fund Performance - Invesco Great Wall Electronic Information Industry Stock A has a year-to-date return of 10.30%, ranking 123 out of 1001 in its category [1] - Invesco Great Wall Long-term Holding Mixed A has a year-to-date return of 14.08%, ranking 310 out of 4592 [1] - Invesco Great Wall Environmental Advantage Stock has a year-to-date return of 14.49%, ranking 63 out of 1001 [1] Fund Managers - The fund managers for the mentioned funds are Yang Ruiwen, Zhang Xuewei, and Wang Kaichuan [6][10][11] - Yang Ruiwen has been with Invesco Great Wall since November 2010 and has managed multiple funds, including the Invesco Great Wall Electronic Information Industry Stock Fund since September 2020 [7][9] - Zhang Xuewei joined Invesco Great Wall in August 2017 and has been managing the Invesco Great Wall Electronic Information Industry Stock Fund since May 2022 [10] - Wang Kaichuan has been with Invesco Great Wall since February 2017 and became the fund manager for Invesco Great Wall Long-term Holding Mixed A in November 2024 [11]