Ningbo Tianhong Stationery Co., Ltd. was founded in 1989. It is a stationery manufacturer integrating "research and development, production and sales". The company's headquarters is located in the beautiful Ninghai Long Street, with business departments in Shanghai and Ningbo.

In 2008, Astronomy developed and produced the first electric pencil sharpener, and began to sell the "Astronomy" brand in China in 2014. Since the birth of the brand, tenwin Astronomy has always adhered to the spirit of fine manufacturing, and has won the recognition of consumers through persistent research and development, pursuit of high quality and continuous technological innovation. Adhering to the continuous pursuit of perfect stationery functions, Astronomy has created one considerate product after another.

Astronomy pursues a good product experience, and has carried out at least ten product designs based on the different functions of electric pencil cutting machine, the effect of the sharpened pen tip, the power supply method, and the purpose of the electric pencil, and has launched double-hole, sharpened and vertical stop. Electric pen cutting machines with different functions such as electric power supply provide people with more choices. In 2018, Astronomy replaced the packaging across the board and entered the learning process with a new image of high quality and efficiency, while continuously launching new products and enriching product lines.

Over the past 30 years, the products have been sold to more than 30 countries and regions in the United States, Japan, South Korea, Europe, the Middle East and Southeast Asia. As of 2018, the sales of single electric pen cutting machines have exceeded 2 million. 6 major cores, 1 machine is in place, pursuing the integration of every component and detail.