How to find good led lighting factory for led solar power lights?

For most overseas led lighting buyers, they often choose cheaper and good sun street lighting , producing from Chinese led light factory. How to find led sun street fixture factory China ? In my opinion, the details aspects as following:

  1. ISO9001-2015 certificated
  2. Have a whole producing line
  3. Have concerning certification for led solar lights for outdoor
  4. Warranty for lights product

More video of best chinese solar light factory details please click:

https://www.youtube.com/channel/UCmxuANIo4JNIIcx8DvTmSfQ/videos