1. Find the manufacturing mark of the piano, usually inside or behind the piano. There will be information such as brand, model, place of origin and year of production on the logo.
2. Determine the year of manufacture of the piano. The date of manufacture of Xinghai Piano can be found in the manufacturing logo, and the general logo will have the words "date of manufacture" and "date of production". If there is no such obvious logo, you can refer to the appearance, style and other characteristics of the piano, and guess the factory date in combination with the historical evolution of the brand.
3. Enter the serial number in Xinghai Piano official website or the third-party piano inquiry website for inquiry. Enter the serial number of the piano in the input box, and the website will display relevant information of the piano, such as production year, place of origin, specifications and so on.
It should be noted that if the piano is second-hand or of unknown origin, it is difficult to determine its authenticity and year of manufacture, so it is necessary to check it carefully when buying the piano and judge it in combination with the opinions of professionals.