It is said that lightning protection is a national patent technology. Is it true?/You don't say.

It's true. I asked Lightning Friends to repair the leak in the bathroom. Their construction workers are very professional. They worked in my house for more than four hours, and the corners and some gaps in the bathroom were handled. Finally, all the glass glue in my house and the joints under the toilet have been transformed with porcelain, and the waterproof layer of my bathroom has been redone with some regenerative waterproof layer technologies. It's been eight months now, and my house has never leaked water. ? Satisfied, please adopt.