Shenzhen has the strongest competitiveness, even the strongest in China. As the capital city and the third largest city in China, Guangzhou's GDP may be slightly stronger than that of Shenzhen, but Shenzhen will be a latecomer. Foshan is the third strongest economy in Guangdong, and Dongguan is also very developed, but its overall competitiveness is not too strong. Strong manufacturing, strong industry, strong industry, strong economic strength. Especially for developing countries like China, manufacturing is the foundation of development at any time, and we can't give it up easily at any time. Moreover, looking at the cities with relatively large domestic economies, most of them started from manufacturing. Although the proportion of service industry is increasing after economic development, many cities never give up manufacturing industry, but constantly upgrade and adjust manufacturing industry to make it more competitive and contain more and more gold.

Foshan ultra-high-definition video, smart home appliance industry cluster and smart equipment industry cluster have been shortlisted in the national advanced manufacturing cluster, and 20 "little giant" enterprises with national characteristics have been added, and 135 enterprises with provincial characteristics have been added. High-tech enterprises will strive to break through1.1.00 million by 2025. Strategic pillar industrial clusters such as smart home appliances, automobiles, new generation electronic information, biomedicine and health have formed strong support for Foshan's economy. Strategic emerging industries such as high-end equipment, intelligent robots, new energy and cutting-edge new materials will become stronger and stronger.

From the perspective of technology research and development, advanced manufacturing industry is characterized by a large number of advanced manufacturing technologies and management technologies, and scientific research funds provide a basis for advanced manufacturing enterprises to update their technologies and enhance their competitiveness. Enterprises maintain their long-term monopoly advantage by firmly controlling R&D links. Technological progress can promote the development of advanced manufacturing industry. From the perspective of investment in fixed assets, the purchase of fixed assets by a country or region's economy and society can increase the total social demand, cause the growth of total social output and contribute to the development of manufacturing enterprises. Secondly, the investment in fixed assets in a country or region often lies in establishing new departments, adopting more advanced scientific and technological equipment and building social infrastructure, which can improve the production efficiency of enterprises and have a positive correlation with the total output value of advanced manufacturing industries.

With the development of Guangdong-Hong Kong-Macao Greater Bay Area, Dongguan enterprises are facing new development opportunities. Jiang Lin suggested that in the context of Guangdong-Hong Kong-Macao Greater Bay Area, cities are no longer fighting alone, but developing urban agglomerations in groups. Dongguan, located between Guangzhou and Shenzhen, has a unique advantage.