DONG-I INDUSTRIAL Co., Ltd. is the leading manufacturer of marine transmission, marine steering system and power take-off in South Korea. South Korea has vast coastline due its geographic benefit of peninsula and thousands of islands. Ten thousands of vessels are being operated throughout the country. Maritime industry in South Korea has been developed to world class in technology and scale. In this market environment, DONG-I initiated its business as manufacturer of hydraulic marine transmission with mission: Best marine products for full customer satisfaction.

Since its beginnings in 1990, DONG-I has been continuously seeking out the best ways to realize our mission for our customers. As a result, DONG-I now enjoys excellent reputation from Korean customers as the most reliable supplier in marine transmission and steering systems. This reputation has enabled DONG-I to become the largest manufacturer and supplier both in size and market share for marine transmission market in South Korea.

In particular, DONG-I marine transmission has been selected for major local marine engine manufacturers in South Korea such as DOOSAN INFRA CORE (formerly DAEWOO Heavy Industries, Ltd.) and HYUNDAI Marine Co. Major overseas marine engine manufacturer distributors in South Korea such as Cummins, Volvo Penta, Caterpillar, Scania, and John Deer also select DONG-I marine transmission as the most compatible option with their engine.  DONG-I also expanded its market scope overseas and currently DONG-I marine transmission, including power take-off and steering system, is being used in over 50 countries worldwide. DONG-I strives to continually meet its mission through continuous innovation, high quality product, and excellent customer service. DONG-I strongly believes it is the best partner for the people who love marine activities with any type of vessels in any where.