The type C waterproof base with screw holes is somewhat different from the previous conventional type C base. This is a small experimental design modification. In terms of design, it directly bypasses the process of welding the PCB board for the conventional type C base, and uses wire welding to weld the red and black wires to make a semi-finished product. In the future, it can be easily charged without the need to connect the red and black wires on the PCB board. The product has waterproof function and comes with waterproof rubber rings. Due to the fact that the product only comes with red and black wires, which are power cables, it only supports simple charging function and does not support data transmission. There are screw holes on both sides, and screws can be used during installation to make the product more secure.