Excuse me, is there a salt crystal lamp in Beijing? The hotel room needs to be decorated. I want to buy some salt crystal lamps and put them in every room to purify the air in the room!

Last time a friend of mine decorated a hotel room and bought a batch of salt crystal lamps. They were all bought in a place called Tangshan Building, which seems to be next to Sihui Bridge. You can go to Baidu map search for specific places. My friend said that the only place in Beijing with authentic lights. They are imported directly from Pakistan and are the general agents in China. The answer is so detailed. Remember to give points!