Mr. Chang Jen Heng
Mr Chang Jen Heng specialises in decoratiove/ functional electroplating, precious metal stripping and recovery, waste water treatment, and etchant off/ online recycling in various industries using the electrochemistry technology.
Mr Chang worked as an R&D Director and is co-founder of the ex-Technochem, Japan for 12 years, making many technical breakthroughs. These include:
Mr Chang Jen Heng specialises in decoratiove/ functional electroplating, precious metal stripping and recovery, waste water treatment, and etchant off/ online recycling in various industries using the electrochemistry technology.
Mr Chang worked as an R&D Director and is co-founder of the ex-Technochem, Japan for 12 years, making many technical breakthroughs. These include:
- Bright nickel plating on brass with 2.3% lead substrate
- Electrolytic nickel stripping from steel substrate saving chemical and waste water treatment cost
- Production yield improvement by reducing open/ short circuit problem in PCB manufacturing
- Activation of the copper surface passivated by the baking process, using specific microetch instead of conventional mechanical brushing.
He is a chemical consultant and an excellent expert in trouble shooting and problem solving in the area of electrochemistry technology for many companies. His current research area focuses on the recovery processes on low
internal stress high hardness Ni-Co alloy plating for the precision engineering, tin silver recovery from alloy 42 substrate and its waste water treatment.
