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Yantai Jereh tractor parts is a subsidiary company of Jereh group which is the China’s Best Public Enterprise and Asia’s 200 Best Under A Billion by Forbes and Top 50 Most Innovative Enterprises in China 

It is located in Yantai, a coastal city embraced by ocean and mountains, with annual average temperature around 12 ℃ and more than 40% forest coverage rate. It has been awarded UN Habitat Award, and being named as Chinese Top Attractive City, The Most Beautiful City of China and National Civilized City.

With years of manufacture and distribution experience on engine parts, Jereh Tractor Parts Corporation have built professional production base for engine parts, mainly the cylinder head and cylinder block for latest style engine for heady duty applications.

The production development and innovation is conducted by our technical team which is composed by senior engineers with more than 20 years experience in engine and its key parts design. With the design philosophy of To be best, continuous Innovation to exceed the customer’s expectation”, they have developed many key components of world well-known brand engines for construction, automotive and marine application. The product range covers cylinder head, cylinder block, fly wheel cover, crankshaft, and camshaft, etc. All the products have achieved the quality requirement of OEM and gained the high acceptance of the market.

The professional foundry base and machining center occupies about 10,000 square meters. The flexible production line adopts advanced CNC machines and other special machine for critical operation. They can finish rough and fine milling, boring and drilling of the cylinder head critical area in high efficiency and stability. All those equipment are of world famous brand which can reduce failure rate of the operators.

All the products manufactured by Jereh are strictly according to the production standard of OEM, and has reached the state of the art of excellence, unmatched quality and precision engineering. Our product is widely recognized by its reliability, durability and cost effectiveness around customers worldwide.

The production and quality process strictly follows the requirement of quality system TS16949.  Besides adopting various kinds of CNC equipments to control the precision of product during manufacturing, we also use three-dimensional measuring machine to ensure the dimensions. Each operation is recorded in a unique series number and can be traced out easily, and each head will be tested by air in hot water to identify potential defect. The head which fails this pressure test will be rejected.

The installation of critical accessories such as valve seat, valve guide and camshaft bearing are carried out by automatic equipment. All parts will go through liquid nitrogen treatment before installation. Because of contraction principle, those parts can be easily mounted on the cylinder head, avoiding the damage caused by installation and increasing the mechanical property