Small and medium-sized steel mills also use the above brands, but most of them are domestic brands: Shenzhen Lixin, Shandong Sac, Kunshan Xinyu and so on. Many of them are private enterprises.

The difference between cold rolling and hot rolling is mainly limited by the crystallization temperature of steel plate. Cold rolling oil is mainly lubrication and cooling, while hot rolling oil is mainly cooling and lubrication, with different emphasis. Therefore, cold rolling is generally prepared into emulsion with a certain concentration, which is sprayed into the plate surface and roll gap through a large circulation system; Hot rolling only needs to mix oil and water (without forming stable emulsion) and then spray it into the roll gap.