In terms of industry standards, qualified small water drill rigs must pass GB/T 16752-2017 "Concrete Drilling Machines" certification to ensure that the equipment meets the specifications in terms of vibration, noise, and safety protection. For example, the vibration value should be less than 5 m/s², the noise value should not exceed 85 dB(A), and it should be equipped with a leakage protection device and an automatic shutdown function when the drill bit jams. When purchasing, attention should be paid to the compatibility between the drill bit and the main unit. Diamond drill bits should be selected according to the hardness of the material (e.g., 40# for concrete, 80# for granite), and the deviation between the drilling diameter and the drill bit diameter should be less than 2 mm.