The most critical standard is J-STD-033, which dictates the handling, packing, and shipping of moisture/reflow sensitive surface mount devices. The cabinet should also comply with ESD S20.20 for electrostatic discharge control. For electrical safety, ensure the product carries CE, UL, or RoHS certifications, especially if you are importing into the European or North American markets. Requesting calibration certificates from the supplier is also essential to ensure the digital hygrometer meets industrial accuracy requirements.