④ Do you conduct proper management

④ Do you conduct proper management to prevent contamination by incorrect use, admixture or mix-up at the manufacturing processes shown below?
a. Line process (including peripherals)
b. work-in-progress storage (including the long-term WIP storage area)
c. Rework process (ex. a repair process for soldering and not a normal production line)
d. production equipment, tools and jigs (if they touch or attach to parts or materials)"