Does your company verify that its suppliers and sub-contractors conduct periodic analysis on solder baths, and on processes where changes occur in material composition and/or concentration*?
[Examples of reaction]
- Management of lead concentration in solder baths
- Polymerization (PVC:chemical reaction by vinyl chloride)
- Electroless nickel plating process (lead:concentration lead variations in the plating solution)
- Ink paints (lead, cadmium, etc.:concentration variations due to the evaporation of solutions, etc.)
- Sealants (DBT,DOT:curing reaction of 2-component-type sealant)
- Adhesives ( tributyltin oxide:management of impurity when dibutyltin is used)