Is Jin Hongsheng's external board universal with Gree?

Not universal. The main control boards used in different types of air conditioners are completely different, so it is impossible to be universal, so the external boards of Jin Hongsheng and Gree are not universal. Zhuhai Gree Electric Co., Ltd. is an international household appliance enterprise integrating R&D, production, sales and service. It owns three brands: Gree, TOSOT and Jinghong, and mainly deals in household air conditioners, central air conditioners, air energy water heaters, mobile phones, home appliances, refrigerators and other products.