| 摘要 |
A golf club c1 has a base part 2, a laser discoloration layer 6, and a protection layer 8. The laser discoloration layer 6 is provided on the outer side of the base part 2. The protection layer 8 is provided on the outer side of the laser discoloration layer 6. The protection layer 8 has laser beam transparency. The laser discoloration layer 6 can be discolored by irradiation of a laser beam. Preferably, an undercoat layer 4 is further provided between the base part 2 and the laser discoloration layer 6. Preferably, the undercoat layer 4 is not discolored by the laser beam. Preferably, the laser discoloration layer 6 includes abase material resin and a laser discoloration material. |
