GENEVA, July 7 -- VERTECHS PETROLEUM TECHNOLOGY INNOVATION AND EQUIPMENT MANUFACTURING CO., LTD (Room 2, No. 200 Checheng Dong Wu Lu, (Long Quan Yi District) Economic Development ZoneChengdu, Sichuan 610100), 四川维泰科创石油设备制造有限公司 (中国四川省成都市经济开发区（龙泉驿区）车城东五路200号第二号厂房) filed a patent application (PCT/CN2023/143380) for "ROTATIONAL VISCOMETER AND DRILLING FLUID MEASUREMENT SYSTEM" on Dec 29, 2023. With publication no. WO/2025/138151,...