A sink is a device that collects gas or holds a lot of water by draining water, and can be used to wash tableware and food. Its main material is stainless steel. Besides stainless steel, there are also iron enamels and ceramics. The process of the sink is divided into four steps: welding and stretching of the sink, surface treatment, corner treatment and bottom spraying. The sink should be maintained and maintained. In recent years, hand-made sinks have become popular. Different from the whole drawing process, manual groove welding, the groove thickness is about 1.0- 1.2mm, and the whole drawing groove thickness is about 0.8mm. Therefore, many people will choose hand-made grooves because they are thicker and feel. However, due to technical reasons, the price of manual trough is generally high. Point. This is the difference. Depends on which one you like. Another suggestion is that the sink must buy more than 800 yuan, otherwise it is fake stainless steel, which will rust in a few months. Just search the sink when you get in. Found my Kohler sink on it. It has been used for two years, as good as new. You can compare more. Generally, the thickness of the hand-made sink is 0.8mm, and the good thickness is1mm. The whole hand-made sink is polished evenly, and the penetration welding technology can make the link more complete and firm. After stretching, the structure of the water tank will be destroyed and it is easy to rust.