Which branch of MCC Tiangong is better?

Zhongyuan Branch, Bohai Branch, Northwest Branch. MCC Tiangong Group Co., Ltd. (hereinafter referred to as MCC Tiangong) belongs to China Metallurgical Corporation, one of the world's top 500 enterprises, and is a large central enterprise. MCC Tiangong has two-level qualifications and two-level qualifications: two-level qualifications-the special qualification for general contracting of housing construction and the special qualification for general contracting of smelting engineering. Double Grade A qualification-Grade A design qualification in construction industry and Grade A design qualification in metallurgical industry.