Is the air conditioner delivered by express delivery?

2. Air conditioning is not a controlled item, which is non-toxic and harmless. Express post office can mail. However, because the articles are special, bulky and not resistant to falling, they are not allowed to bump at all, so we must pay attention to the wrapping paper shell and foam bread in this process to prevent them from breaking. And because the air conditioner is bulky, the whole postage is more expensive.