ZL026 Inclined Tube (Design Patent) (Science and Technology) ZL027 An Oil–Gas–Water Separator with a Feed-Blocking Weir Plate (Utility Model) (Science & Technology) ZL028 A Water-Level Regulator for Oil–Gas–Water Separation (Utility Model) (Science and Technology) ZL029 A New Type of Oil–Gas–Water Separation Device (Utility Model) (Science and Technology, Technology) ZL030 An Oil–Gas–Water Separator with a High–Low Weir Structure (Utility Model) (Science and Technology, Technology) ZL031 An Oil–Water Separation Device for Regulating the Bottom Water in the Lower Chamber at a High Level (Utility Model) (Science and Technology, Technology) ZL032 An External-Circulation Heating Crude Oil Settling and Purification System (Utility Model) (Science and Technology, Technology) ZL033 Method of Using an Inclined Cover-Type Pressurized Electrolytic Gas-Removal Device (Invention Patent) (Science and Technology, Technology) ZL034 A High-Level Float Linkage Mechanism Installed on the Side of an Oil-Gas Separator (Utility Model) (Science and Technology, Technology) ZL035 A float linkage mechanism installed at the top of an oil–gas separator (utility model) (science and technology, technical)