Why didn't the newly bought Wuling Glory Cab single row install the gantry of the cab guardrail? Where can I buy it?

There is a single-row gantry selling Wuling Glory cars on the Internet, which is the protective railing of the middle cab. I just bought it last month. Hebei is located in the auto parts factory, which is a specialty store. The installation is simple, no welding is needed, and it is fixed with 8 screws, which is quite firm.

Please accept my answer.