Differences in material, quality, etc.

1. Material: A casserole worth tens of yuan is made of clay, quartz and talc, while a casserole worth several hundred yuan is made of clay, quartz and spodumene.

2. Quality: A casserole worth a few hundred yuan is of better quality, with reasonable structure, smooth placement, round body, smooth inner wall, and no protruding sand grains. The casserole is round, uniform, complete and without cracks, and the lid is tightly buckled and does not deform. Casserole that costs tens of yuan has some quality problems, such as unreasonable structure, uneven placement, and insufficiently smooth inner walls.