U型槽水泥制品除了要选用高品质的模具之外，对于材质的要求也是很高的，必须采用天然的麻石机经剥削加工而成，材质的强度也必须合格，表面不能有瑕疵，光滑，洁净，边角不得有缺角，无明显的色差，色斑，装卸时要轻，稳，慢以防磕碰损坏材料。U型槽模具必须选用一级钢板，内壁不得有凸起的小泡或凹进去的小坑，这样都会影响整个水泥制品的外形美观度。

Slot type U cement products in addition to the selection of high-quality mold, the material requirement is very high, must be made of natural granite by the exploitation process, material strength must be qualified, not the surface blemishes, smooth, clean, no missing corner angle, no obvious color difference, splash, loading and unloading to light, steady, slow to prevent bump damage material. The U groove mold must be selected with the first grade steel plate, and the inner wall must not have a raised vesicle or a small hole in it, which will affect the appearance and aesthetics of the entire cement product.