The U.S. government intends to impose taxes on American companies producing overseas, which should be moved back to the U.S. for domestic manufacturing.

3D printing technology has been widely used in recent years, and it has also allowed the manufacturing industry to evolve into a "smart" manufacturing industry, which can achieve the large output value with the less manpower.

According to the International Economic Forecasting Agency, the global economic growth of this year (2020) is almost the same as the growth rate of 2019. However, the impact of the covid-19 may affect the economy of various countries in the short term and even impact the industrial supply chain. The current situation of the international economy and explain the possible influence factors of the recent development of the North American market, including the US-Canada-Mexico Agreement, the US-Japan Agreement, the US-China trade war, etc., and then the development of the supply chain changes explore the outlook for the North American market.