The company is named: Muhe. Please help me explain these two words. It specializes in water-saving irrigation. I hope it makes sense.

Wooden box-tomb box-tomb river-harmony are words that can be homophoned, which means there are negative homophonics in them. You may consider changing your name to another one.

Your statement of "thinking of a loud slogan for the word Muhe" is actually a wrong statement. The correct one is "Design an advertising slogan based on the company's goal positioning or product functions." Of course, relevant text can be embedded. By the way, for advertising slogan writing, you can find: Qixingxing Studio.