Find two answers:

1. Shaangu (well-known trademark in China), ZhangGu (top 500 Chinese machinery companies), Changfeng (Hubei famous brand), Best ( Jiangsu Famous Brand), Jingong (Shandong Famous Brand), Shanggu (Shanghai Famous Brand), Haoden, Sanfeng (Hubei Famous Brand), Jin Tongling (Jiangsu Famous Brand), Wugu (Wuhan Famous Brand)

2. Changgu, Tiangu, Shanggu, Zhanggu, Baishide, Jinggong, Chuanyuan, Hengrong, etc., for reference! ! Specifically, you refer to cost-effectiveness.