Joke Collection Website - Mood Talk - I want to send a publicity advertisement about waterproof engineering. Is it personal or convincing?

I want to send a publicity advertisement about waterproof engineering. Is it personal or convincing?

Just write it simply, that is, we specialize in waterproof engineering to ensure the quality of our work, and then talk about how many people are in your work team, why what projects have been done in your place, and remember to leave a convenient way to contact. Where are you from? I'm from Shijiazhuang, an advertising company.