1. Can precision castings be thin-walled castings? Precision castings are one of the castings that preheat the molded casing at high temperatures. If the casting is slow, thin-walled castings are available. So the answer to this question is yes, if it's not ferrous, it can be done by die casting. 2. Can water-soluble iron cores be used for Precision casting? For cast products, the core can be used with water soluble cores, but with specific requirements. In general, if the casting structure is not suitable for demolding, a water-soluble core can be used on the core to obtain a good release effect. 3. Does pickling need to be used in precision casting production? In this case, from a professional point of view, it is necessary to look at the actual situation. If the surface of the casting has dirt or scale, it needs to be pickled to remove these for passivation and the like. If not, it is not necessary. Therefore, this question is difficult to answer because it depends on the actual situation.