On December 16, Beijing time morning news, according to the Wall Street journal reported, when, and enterprise competition from China and other emerging markets, construction and mining equipment manufacturers in the United States often said their win is quality: indeed, the United States manufacturing machinery equipment prices higher, but use time longer, in the long run is for consumers to save money. 

But the london-based group disputed that claim, with Sam Walsh, chief executive, saying Rio had increased its purchases of equipment from China and India and found the quality of products in those countries impressive. 

He said his purchases included heavy trucks, loading equipment and railcars carrying iron ore, "but the interesting thing is that when we compare the new equipment with the old suppliers, we find that the quality of the former is actually better." 

Ann Duignan, an equity analyst at jpmorgan chase who has been following Chinese equipment makers for a decade, says there is a big gap in quality.For the best, she points out, quality is improving at an alarming rate. 

That means western equipment makers like caterpillar and joy global face tougher competition from Chinese companies.In recent years, both companies have been looking for access to the Chinese market, while also trying to cut production costs and improve technology to localize.