On May 19th , 2010, VIGA Trapezoid basin mixer which designed by designer Peter Kuang, tau txais tus qauv tsim daim ntawv pov thawj pov thawj los ntawm lub xeev kev txawj ntse lub chaw haujlwm ntawm p.r.c. Daim ntawv pov thawj tsis muaj. Ref.:1220930 which with the valid till May 18th 2020.
Trapezoidal Faucet Design Patent Certificate-2009
Tom ntej no: 2012 Kev ua yeeb yam KBC
