How about Harbin Convention and Exhibition City?

There are very few reliable ones now. It is suggested not to buy an auction house now, which is very risky. Even if the company was reliable before, Line 5 is hard to say. Hehe, you are waiting for 10-20 years. There may be some. Don't worry. Harbin has been engaged in antenna for several years, not to mention Line 5, which is based on the 738 1 project for several years. Otherwise, it's hard to say when.