Fix all grammatical errors: However, just like plastic conduit, there are many engineering designs which have not developed into perfect innovations in China because of the problems exist now.
The problem of the plastic conduit is that it is not perfect, but it is a good design.
The problem of the plastic conduit is that it is not perfect, but it is a good design.
The plastic conduit is a good design because it is a good design, but it is not perfect.
The plastic conduit is a good design because it is a good design, but it is not perfect.
The plastic conduit is a good design because it is a good design, but it
The problem with the plastic conduit is that it is not a perfect solution. It is a good idea to use a plastic conduit to connect the two pipes. The problem is that the plastic conduit is not a perfect solution.
The plastic conduit is a good idea because it is a good idea to use a plastic conduit to connect the two pipes. The problem is that the plastic conduit is not a perfect solution.
The plastic conduit is a good idea because it is a good idea to use a plastic