Note 1: Processes using lead-free soldering need to be separated from those using lead soldering. If this is not practical, thorough identification and appropriate procedures for changeover need to be implemented.
Note 2: It is desirable to pay attention also to the chemical substances contained in substances/preparations that may remain on products during the manufacturing processes, or that may accompany the manufacturing processes (e.g. coolant, grease, lubricating oil, rust preventive oil).