用于户外动力机械的，比如割草机什么的。
我的功课是回答如下问题：
How many small engines for outdoor power equipment is produced yearly in China?
Who are the biggest players, Where do they export, What is the price of their engines, who are their customers, what types of engines do they produce and so on.
If there are any players who are both engine manufacture and OEM, if yes who?
Is there an increasing trend towards being both the engine producer at the same time the OEM?
各位知道有什么协会网站或者电话么？多谢多谢！！ 55555~~~
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