Lynas malaysia sdn bhd is questioning as to why malaysia is importing gypsum material saying the company is capable of producing a synthetic version of the substance locally one of lynas malaysia s by products is neutralisation underflow residue nuf a magnesium rich synthetic gypsum which is a non radioactive non toxic non hazardous and chemically equivalent to. 60 9 582 5200 lynas corporation limited registered office level 1 45 royal street east perth wa 6004 phone. Lynas malaysia sdn bhd.