求翻译：中国弹簧行业经过多年的发展与改革，在行业中目前国产弹簧无论是档次还是质量已经有了质的变化，但随着经济的发展，尤其是汽车、发电、铁路运输及城市公交等几大行业的迅猛发展，在给弹簧业带来巨大市场的同时，也提出了一个又一个“难题”。过去，在这些“难题”面前，国内企业只能是望“难”生叹。是什么意思？

Chinese spring industry after years of development and reform in the industry, domestic spring grade or quality has been a qualitative change, but with the economic development, especially in several major industries such as automotive, power generation, rail transport and urban public transport the

China's Spring industry after years of development and reform in the industry, and in spring it is currently produced and quality standards have been the changes in the quality of, but with the development of the economy, in particular, automotive, power generation, rail transport and urban public t

The Chinese spring profession passes through many year development and the reform, in profession present domestic product spring regardless of were the scale or the quality already had the archery target change, but along with the economical development, in particular the automobile, the electricity

After years of development and reform of China Spring industry, domestic spring in the industry whether it be a qualitative change in the grade or quality have, but with the development of the economy, in particular automotive, power generation, rail transport and urban public transport, as well as