1.** Machinery manufacturing industry * *: Ruian's machinery manufacturing industry covers automobile parts manufacturing, mold manufacturing, machine tool equipment manufacturing and other fields, and is relatively developed.

2.** Textile and garment industry * *: The textile and garment industry in Rui 'an is active, including textile processing, textile printing and dyeing, garment design and manufacturing and other fields.

3.** Electronic information industry * *: Ryan has certain strength in the field of electronic information, involving electronic component manufacturing, electronic product assembly and communication equipment manufacturing.

In addition, the building materials industry is also an important industry in Ryan, mainly concentrated in industrial parks and economic development zones, including building materials production, decoration materials manufacturing, glass processing, cement manufacturing, ceramic production and so on.