Today, I would like to introduce our warehouse for you. 
you might be very curious, how do we store these materials? 
The following is every corner of our warehouse:
These are material pipe, they will be used in resonator.  One basket has a size tube. 
For 4.3 octave example, we used 7 different sizes pipe in one model and we have 3 model in 4.3 octave, no mention other models. They occupy more than half of the warehouse corner. 
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| the material pipe of resonator | 
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| the material pipe of resonator | 
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| the material pipe of resonator | 
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| These are finished resonators. | 
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| The fihisned frames. | 
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| Ready to shipping. | 
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| Un-coat resonators. | 
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| Rough materials. |