求翻译：目前，我国弹簧行业的产量已趋于饱和，据专家统计现在我国弹簧年生产量已达40亿件，各类弹簧产品共有21个大类，1600多个品种，主要有气门弹簧、悬架弹簧、膜片弹簧、减震弹簧、液压弹簧、油泵弹簧、碟形弹簧、高温弹簧、卡簧、拉簧、扭簧、压簧、涡卷簧以及异性弹簧等。是什么意思？

At present, the yield of spring industry in China has become saturated Experts estimate that China's spring production capacity has reached 4 billion total of 21 categories, over 1600 varieties of all kinds of spring products, valve springs, suspension springs, diaphragm spring, shock absorber sprin

At present, our spring production of the industry is saturated, it is now my spring experts in statistics have been produced for up to 4 billion, and a total of 21 different types of spring products, 1600 more than one species, the main valve springs, suspension springs, diaphragm springs, shock abs

At present, our country spring profession output tended to saturated, now our country spring year productivity has reached 4,000,000,000 according to the statistics of expert, each kind of spring product altogether has 21 big kinds, more than 1600 varieties, mainly have the valve spring, the suspens

Currently, in China Spring industry of yield has tends to saturated, according to expert statistics now in China Spring years production volume has up 4 billion pieces, various spring products total 21 a large class, more than 1600 multiple varieties, main has valve spring, and hanging frame spring,