River-Sea Heavy Mechanical Co., Ltd.

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Nantong Rainbow Heavy Machineries Co., Ltd.

🇨🇳 China

2003

1001-2000 people

Manufacturer/Trading Company

High capacity factory

Established brand

Large enterprise group

Own brand

Shipments

185

Key customer

GENMA

Key market

🇮🇳 India

Description

Nantong Rainbow Heavy Machineries Co., Ltd. (RHM), a subsidiary of the publicly listed Jiangsu Rainbow Heavy Industries Co., Ltd. (002483.SZ), is a premier global manufacturer and service provider of heavy machinery. Established in 2003 and headquartered in Nantong, China, the company operates from a massive 220,667 sqm manufacturing base with a workforce of over 1,500 employees. RHM specializes in the R&D, fabrication, and commissioning of high-end equipment for ports, mining, offshore engineering, and bulk material handling. The company operates under two primary international brands: GENMA, which focuses on material lifting and handling solutions such as portal cranes, gantry cranes, ship loaders/unloaders, and mobile harbor cranes; and KOCH, a globally recognized brand for bulk material handling with over 80 years of history. Their diverse product portfolio also includes offshore wind power monopiles, LNG tanks, hatch covers, lashing bridges, and specialized mining equipment like rear-dump bauxite trailers. As a National High-tech Enterprise and a certified Enterprise Technology Centre of Jiangsu Province, RHM maintains a strong focus on innovation and quality, holding ISO 9001, ISO 14001, and OHSAS 18001 certifications. The company provides comprehensive OEM and contract manufacturing services, maintaining strategic partnerships with global industry leaders such as Rio Tinto, Sandvik, Cargotec, and Andritz. With an annual production capacity of 700 units and a global service network, RHM exports its high-tech solutions to markets across North America, Europe, Asia, and the Middle East.

Mobile Harbour Crane$1400000

Pneumatic Ship Unloader$1000000

Taizhou Sanyang Heavy Machinery Co., Ltd.

🇨🇳 China

1997

101-200 people

Manufacturer/Trading Company

Established brand

Product customization

Patented technology

High-tech enterprise

Shipments

Key customer

REOTA

Key market

North America

Description

Taizhou Sanyang Heavy Machinery Co., Ltd. (SYHM) is a leading Chinese manufacturer and supplier specializing in heavy machinery for dredging and marine applications. Established in 1997 and headquartered in Taizhou, Jiangsu, the company operates a 15,000 to 20,000 square meter factory equipped with precision machinery and a lifting capacity of approximately 100 tons. With over 25 years of industry experience, the company provides professional solutions for Cutter Suction Dredgers (CSD) and Trailing Suction Hopper Dredgers (TSHD). Their comprehensive product portfolio includes core dredging components such as dredge pumps, dragheads, cutter heads, ball joints, cutting teeth systems, swivel bends, gate valves, and spud systems. Beyond dredging, the company specializes in marine propulsion and steering, manufacturing complete marine shafting with propellers and full rudder systems. SYHM is recognized for its technical expertise, maintaining R&D collaborations with the Ship Design Institute of Shanghai Jiaotong University and the 708 Institute. This focus on innovation has resulted in over 10 patents and various national science and technology certifications. Operating as both a manufacturer and trading company, SYHM offers OEM and ODM services and holds ISO 9001 certification. The company serves a prestigious global clientele, including major dredging firms such as Boskalis, IHC, Jan De Nul, and Vosta, as well as various CCCC dredging subsidiaries. With an annual revenue reaching up to USD 50 million and a workforce of approximately 120 employees, the company exports its reliable and durable components to over 30 countries across North America, Europe, Asia, and the Middle East.