西部材料：副总经理杨建朝辞职

Core Points - The company announced that Vice General Manager Yang Jianchao has applied for resignation due to reaching the legal retirement age, effective from the date the resignation report is delivered to the board of directors [1] - Yang Jianchao will continue to serve as the chairman of the supervisory board of the subsidiary Xi'an Filter Metal Filter Materials Co., Ltd [1] - As of the announcement date, Yang Jianchao holds 30,000 shares in the company and will continue to comply with relevant laws and regulations regarding share management [1] - The company expressed gratitude for Yang Jianchao's contributions during his tenure [1]