Transformer Core Components and CRGO Processing: Chenfan Electric Product Reference

CHENFAN ELECTRIC PRODUCT PORTFOLIO 2026 Transformer cores | CRGO / GOES | China 01 / CORE MANUFACTURING Custom Assembled CRGO Transformer Cores Drawing-based, assembled grain-oriented electrical steel cores for transformer manufacturers. Actual Chenfan product / factory photograph. Configuration varies by project. Chenfan Electric manufactures custom assembled transformer cores from grain-oriented electrical steel (CRGO/GOES) to customer-approved drawings. Supply scope can include cut laminations, stacking and core assembly, with the delivery configuration agreed before production. Manufacturing controls cover material traceability, cut dimensions, burr control, joint alignment and stack geometry. Inspection records and protective packaging are agreed to suit the receiving factory and transport route. Material grade, gauge, core dimensions, test conditions and acceptance limits are confirmed for each project. MANUFACTURING / HANDLING CONTROLS DEFINE BEFORE PRODUCTION / SUPPLY Material identification Approved core drawing Cut dimensions and burrs Material grade and gauge Joint alignment Assembly and delivery scope Stack geometry Inspection and acceptance basis Xiongxian Chenfan Electric Power Technology Co., Ltd. | Established 2015 1/4

CHENFAN ELECTRIC PRODUCT PORTFOLIO 2026 Transformer cores | CRGO / GOES | China 02 / CUT LAMINATIONS Step-Lap CRGO Laminations for Transformer Cores Precision cut-to-length GOES laminations with project-specific step-lap geometry. Actual Chenfan product / factory photograph. Configuration varies by project. Chenfan Electric supplies cut-to-length CRGO/GOES laminations for transformer core production. Lamination lengths, widths, mitre angles and step-lap sequences are manufactured to the approved drawing and assembly plan. Production control focuses on edge condition, burrs, dimensional consistency, piece identification and the correct stacking sequence. Material grade and thickness are selected against the purchaser's design requirements. Delivery can be arranged as identified lamination sets or protected stacks, with packaging and inspection documentation agreed for the project. MANUFACTURING / HANDLING CONTROLS DEFINE BEFORE PRODUCTION / SUPPLY Length and width consistency Approved lamination schedule Mitre and step-lap sequence Material grade and gauge Edge condition and burrs Identified sets or stacks Piece identification Packaging and inspection scope Xiongxian Chenfan Electric Power Technology Co., Ltd. | Established 2015 2/4

CHENFAN ELECTRIC PRODUCT PORTFOLIO 2026 Transformer cores | CRGO / GOES | China 03 / MATERIAL SUPPLY CRGO Grain-Oriented Electrical Steel Coils CRGO/GOES material supply with slitting and cut-to-length processing options. Actual Chenfan product / factory photograph. Configuration varies by project. Chenfan Electric supplies cold-rolled grain-oriented electrical steel for transformer core applications, with slitting and cut-to-length processing available according to the project scope. Purchasers specify the required steel grade, thickness, width, quantity and applicable material test basis. Material identification and handling protection are maintained through the agreed processing stages. Original coil supply, slit coil supply and cut lamination delivery are distinguished in the quotation so that the receiving factory can plan its remaining manufacturing work. MANUFACTURING / HANDLING CONTROLS DEFINE BEFORE PRODUCTION / SUPPLY Material identification Steel grade and gauge Coated surface protection Width and quantity Handling through processing Original or processed supply Agreed traceability scope Material documentation basis Xiongxian Chenfan Electric Power Technology Co., Ltd. | Established 2015 3/4

CHENFAN ELECTRIC PRODUCT PORTFOLIO 2026 Transformer cores | CRGO / GOES | China 04 / CRGO PROCESSING CRGO GOES Slit Coils for Transformer Core Production Grain-oriented electrical steel processed to the required strip width. Actual Chenfan product / factory photograph. Configuration varies by project. Chenfan Electric supplies CRGO/GOES electrical steel and provides slitting for transformer core manufacturers. Strip width, steel grade, gauge, coil handling and packaging are specified against the purchaser's processing needs. Controls include material identification, width consistency, edge and burr inspection, and protection of coated steel surfaces during handling. Mill documentation and traceability scope are agreed before supply. Coil dimensions, available grades, quantity and shipment schedule are confirmed by quotation rather than treated as fixed stock promises. MANUFACTURING / HANDLING CONTROLS DEFINE BEFORE PRODUCTION / SUPPLY Strip width consistency Grade, gauge and strip width Edge and burr inspection Coil handling requirements Coating protection Packaging configuration Coil identification Documentation and schedule Xiongxian Chenfan Electric Power Technology Co., Ltd. | Established 2015 4/4