R&D Center

Hanyang Chemical is the best and most experienced surface treatment
chemical manufacturer in Korea.

Patent

1990 Since
1998.10.01 Electroplating composition and process for copper alloy or iron-nickel alloy substrate
1998.10.21 Palladium alloy plating composition
1998.12.30 Electroless palladium or palladium alloy plating composition
1998.02.01 Palladium-tin electroplating composition
1999.02.02 Process for plating palladium or palladium alloy onto iron-nickel alloy substrate
1999.05.06 Nickel electroplating solution and process onto copper alloy or iron-nickel alloy substrate
1999.05.06 Electroplating composition and process for copper-nickel alloy onto copper alloy or iron-nickel substrate
1999.05.26 Electroplating composition and process for multi-layer onto iron-nickel alloy substrate
1999.06.15 Pre-treatment solution for iron-nickel alloy substrate
2000 Since
2000.04.18 A plating method to improve corrosion resistance and equalness of plating layer
2001.07.16 Tin alloy plating composition
2001.10.08 Tin-lead alloy stripping solution including methane sulfonic acid
2001.10.08 Weak acid silver stripper
2001.10.08 Electropolishing compound for copper, copper alloy, and iron-nickel alloy substrate
2009.09.25 Aqueous composition for forming trivalent chromium coating and method of forming black trivalent chromium coating using same