A production line for ceramic shell making, comprising: a conveyor chain system configured to convey a batch of modules ; a robotic arm configured to remove and replace one or more modules among the batch of modules relative to the conveyor chain system and hold the one or more modules during a plurality of subsequent operations, the robotic arm being configured to be moveable to a plurality of positions each of which corresponds to one of a plurality of stations; a control center operably connected with the conveyor chain system and the robotic arm , respectively, the control center being configured to cause, based on an instruction, the conveyor chain system and the robotic arm to cooperate with each other, the instruction being a program control encoding that is pre-stored in a memory of the control center ; a slurry coating device configured to coat the one or more modules in slurry, wherein the slurry coating device is operably connected with the control center , and the slurry coating device includes a plurality of slurry tanks ; and a sanding device configured to sand the one or more modules, wherein the sanding device is operably connected with the control center , and the sanding device including a plurality of sanding machines and a powered motion mechanism , wherein the control center is configured to cause, based on the instruction, the slurry coating device to move so as to transfer a slurry tank including a corresponding type of slurry to a first designated position; and the control center is configured to cause, based on the instruction, a sanding machine including a corresponding type of sand to move, by the powered motion mechanism , to a second designated position. a conveyor chain system configured to convey a batch of modules ; a robotic arm configured to remove and replace one or more modules among the batch of modules relative to the conveyor chain system and hold the one or more modules during a plurality of subsequent operations, the robotic arm being configured to be moveable to a plurality of positions each of which corresponds to one of a plurality of stations; a control center operably connected with the conveyor chain system and the robotic arm , respectively, the control center being configured to cause, based on an instruction, the conveyor chain system and the robotic arm to cooperate with each other, the instruction being a program control encoding that is pre-stored in a memory of the control center ; a slurry coating device configured to coat the one or more modules in slurry, wherein the slurry coating device is operably connected with the control center , and the slurry coating device includes a plurality of slurry tanks ; and a sanding device configured to sand the one or more modules, wherein the sanding device is operably connected with the control center , and the sanding device including a plurality of sanding machines and a powered motion mechanism , wherein the control center is configured to cause, based on the instruction, the slurry coating device to move so as to transfer a slurry tank including a corresponding type of slurry to a first designated position; and the control center is configured to cause, based on the instruction, a sanding machine including a corresponding type of sand to move, by the powered motion mechanism , to a second designated position. <EOS>