GENEVA, May 10 -- QINGDAO ADD VALUE FLOW METERING CO., LTD. (2nd Floor, East Plant (B), No. 13 Hancheng Road, Qingdao Free Trade ZoneQingdao, Shandong 266555), 青岛澳威流体计量有限公司 (中国山东省青岛市（山东）自由贸易试验区青岛片区前湾保税港区汉城路13号厂房二层东区（B）) filed a patent application (PCT/CN2023/136998) for "FLOWMETER AND VIBRATING PLATE THEREOF" on Dec 07, 2023. With publication no. WO/2025/091618, the details re...