1997: Commenced production of gasoline engines and generators and established brand called TengLong. During 1997-2006, the factory established its initial production scale.

2009: Expanded into the tool sector by developing pneumatic nail guns and established nail gun brand, YUGO.

2010: Undergone factory restructuring and officially incorporated as a manufacturing company.

2011: Achieved R&D breakthroughs with 37 nail gun variants including:

• Straight nail guns

• Brad nail guns

• Staple guns

• Cordless nail guns

• Concrete nail guns

2013: Made technological breakthrough with F30 jam-free straight nail gun, achieving industry-leading technical standards.

2017: Started exporting nail guns to 11 countries and regions, Canada,Spain, etc.

2022: Established cooperative relationships with Zhejiang Golden Index Holdings Co., Ltd. and Nanjing Tengya Precision Technology Co., Ltd

2023: Expanded export nail guns to 21 countries and regions, and begain to lay out the export of gasoline engines

2024: Due to excellent export performance, developed the factory's foreign trade department into the current Chongqing Shumao Tong Technology Co., Ltd, specializing in international trade.