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Fracture Analysis of Vavle Spring
The valve spring of the automobile engine produced by a spring manufacturing company is made of Dingren 70 steel wire, which is equivalent to domestic 553 steel. Wire diameter, 4 claws. After the...
Marine Engine Valve Engine Spare Parts Factory
The valve seat in an internal combustion gasoline or diesel engine is the surface against which an intake or an exhaust valve rests during the portion of the engine operating cycle when that valve is...
The world's top 500 fresh out of the list
On July 22, Fortune magazine released the list of the world's top 500 companies in 2019. This time, a total of 129 Chinese companies were on the list, which is the first time that China has surpassed...
Greece wants to revive the shipbuilding industry, and the second largest shipyard has won huge sums of money to save
Greece wants to revive the shipbuilding industry, and the second largest shipyard has won huge sums of money to save International Ship Network News, recently, the US investment bank Chatsworth...