At present, China's bearing used in some advanced equipment, whether it is High-speed Rail or the use of aircraft engine, almost all imports!" On the morning of 6 NPC and CPPCC CPPCC group discussions, deputy general manager of Commercial Aircraft Corporation of China, C919 large passenger aircraft chief designer Wu Guanghui members voiced his long-awaited worry worry.

“我们应该从国家层面鼓励一些企业去做一些高精尖、市场份额较小、利润也没有那么大的小元器件，而不是一味地追求大宗品和利润。”

"We should be from the national level to encourage some companies to do sophisticated, small profits, market share is not so large and small components, rather than simply the pursuit of bulk goods and profits."

“在高速轴承制造上，我国的高精尖产品都不行。”吴光辉坦承，在制造飞机时他们也曾找过国内的厂家，但是质量和可靠性很难满足航空发动机的高要求。“尽管我们国家钢铁产量世界第一，但是一些高精度钢、特种钢还得依赖进口。”

"In the high-speed bearing manufacturing, our products are not high." Wu Guanghui admits, in the manufacture of aircraft when they have looked for the domestic manufacturers, but the quality and reliability are difficult to meet the high requirements of aero engine. "Despite our national steel output is the first in the world, but some high precision steel, special steel still rely on imports."

他还以轴承钢为例——这是一种用来制造滚珠、滚柱和轴承套圈的钢，具有高而均匀的硬度和耐磨性，以及高的弹性极限。据了解，轴承钢的制造对其化学成分的均匀性、非金属夹杂物的含量和分布、碳化物的分布等要求都十分严格，是所有钢铁生产中要求最严格的钢种之一。“做出来的轴承钢珠很小，一颗一颗的。”吴光辉用两只手指比划出黄豆大小，“这个东西用起来量也不大，人们觉得特意为它开个精炼炉不值，而且从研发到真正生产可能还会需要一个过程，所以很少有人愿意去做这方面的研发。”

He also in bearing steel for example -- this is a method for the manufacture of ball, roller and bearing steel, with high hardness and wear resistance of uniform, and high elastic limit. It is understood, bearing steel, the uniformity of the chemical components of the content and distribution of carbide, non metallic inclusions distribution requirements are very strict, is one of the most stringent requirements of all kinds of steel in steel production. "Bearing ball made out of very small, one by one." Wu Guanghui with both his fingers a bean size, "this thing together with the amount is not large, people feel specially for a refining furnace is not worth, but also from R & D to the real production may also need a process, so very few people are willing to do research and development in this area."