How to correctly choose the required splice box?

How to correctly choose the required splice box?
1. Specify the environment used
- Overhead
- Direct burial (need to pay special attention to sealing)
- Pipes, manholes (same as above)
- Underwater (crossing a ditch)
- You can also choose heat-shrinkable sealing end caps for optical cables
2. Clarify the structure of the optical cable used
- Stranded layer (number of cores per tube)
- Central tube type (special optical cable splitter for easy operation)
－ Skeleton type
- Outer diameter of the cable
－ Whether it is OPGW power optical cable, etc.
3. Identify the type of fiber
- Single core (number of cores)
- Ribbon (ribbon with different number of cores)
- Whether it is a hybrid cable
4. Clarify the network structure
- Whether it is necessary to go offline in the future
- Whether on-site branches are required; that is, several in and several out
- Trunk and access network or FTTX
- Do you need to open the material frequently