Is cold rolling a very complicated job? Please answer as soon as possible. Thank you.

Bengang refers to Bengang Pohang, a joint venture between Bengang and South Korea's Pohang, so there is a saying in the market that the old Bengang refers to Bengang and the new Bengang is Bengang Pohang. It is generally believed that the materials produced by Posco in Benxi Steel are better than those produced by old Benxi Steel: the stamping performance of old Benxi Steel products is better than that of Posco in Benxi Steel, but Posco products in Benxi Steel have higher yield ratio, better safety and better surface.

Baosteel Nippon Steel, a joint venture between Baosteel and Nippon Steel, seems to be the same as Posco of Benxi Steel: the stamping performance of Baosteel's products is better than that of Baosteel Nippon Steel, but the yield ratio of Baosteel's products is also higher, and the safety performance and surface performance seem to be better than Baosteel's products. Baosteel's products are also widely used in automobile steel and home appliance panels.

Of course, the above comparison refers to universal/universal.