It can be painted, and a special primer for stainless steel with high adhesion should be used.
Stainless steel paint is sold in Dongguan Haifa Chemical Industry. Their stainless steel paint can be used for various stainless steel substrates, 20 1.304. The coating used on the surface of stainless steel has excellent adhesion. After drying, the blade will not fall off. Now there are paints that can be directly painted and molded at one time without primer, which saves a lot of cost and labor.