- The Bottom Is Designed with Grooves, Which Can Stabilize The Inserts Such as Test Tubes
- Clearly See The Contents of The Test Tubes and Easily Insert and Remove The Test Tubes
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- Hollow design in the middle of the test tube rack, no obstruction, you can clearly see the contents of the test tube
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- All The Edges of The Test Tube Rack Have been Fire-Thrown, So They Are Smooth and Do Not Cut Hands When Picked Up
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