Trained technicians respond to all of our calls.

The service contract applied to all upgrades.

My previous question could you tell me if this is written right.

These are written correctly. Are they accurate?

Yes, your sentence is written correctly. Here's a breakdown of the sentence structure:

1. "Trained technicians respond to all of our calls."
- Subject: "Trained technicians"
- Verb: "respond"
- Object: "all of our calls"

2. "The service contract applied to all upgrades."
- Subject: "The service contract"
- Verb: "applied"
- Object: "to all upgrades"

Both sentences are grammatically correct and convey the intended meanings.