1. Introduction

2. Data  
2.1. CRAFTS  
2.2. Follow-up Observation  

3. Analysis  
3.1. Searching Algorithms  
3.2. Completeness  
3.3. Standing Waves  
3.4. Candidates Selection  
3.5. H I Absorption Measurement  

4. Results  
4.1. Previously Known Absorbers  
4.2. New Absorbers  
4.3. Mid-infrared Colour  
4.4. Spurious Detections  

5. Discussions  
5.1. Correction for Standing Waves  
5.2. Information from Neighboring Beams  
5.3. Counterparts to the Radio Sources  
5.4. Expected Detection  

6. Summary