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Spot welding machine accessories welding pen full set of accessories DIY portable 12V battery energy storage spot welding machin Hardware and Replacement Parts 2:12/24 hour time mode isDIY Portable 12V Battery Energy Storage Spot Welding Machine PCB Circuit Board Welding Equipment Spot Welding Machine Accessory Foreword: Thank you for your attention. This product is a semi finished circuit board. You need to have a certain electrical knowledge and hands on ability. You also need to prepare some necessary tools such as pliers, screwdrivers, soldering irons, etc. Note: Battery Not Include Description: The circuit board of this spot