The standard five elements of SOP include material name and quantity, fixture, equipment name and parameters, operation steps, staffing and safety factors.

SOP is a standardized operating procedure to ensure that the work is carried out according to the established standards. The name and quantity of materials require to verify whether the materials are fully prepared and the quantity is correct before production, and pass IQC inspection. The fixture needs to be calibrated to ensure its normal use. The name and parameters of the equipment require the operators to be trained and qualified before taking up their posts. Before operation, they should carefully read the instruction manual of the equipment and set the parameters as required. The operation steps are the focus of SOP, and the requirements are concise and clear, which makes people clear at a glance. Staffing should be clearly defined in SOP, so as to avoid the need to assign extra personnel when going to work every day. Safety is an important consideration, and SOP should include operating precautions, inspection items and personnel safety instructions.