- Gallant Lau
- scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, ytterbium.
- Address:21-27 Playing Field Road Prince Edward Kowloon Hong Kong
- Oxide, Pr6O11, Neodymium Oxide, Nd2O3, Samarium Oxide, Sm2O3, Europium Oxide, Eu2O3, Gadolinium Oxide Gd2O3, Yttrium
- Rare Earth Oxides, La2O3, Lanthanum Oxide, Cerium Oxide, CeO2, Praseodymium.
- Address:Flat A,20/F ,Tak Wing Industrial Building,3 Tsun Road,
- Cheung On
- Cerium Carbonate,Stannous Chloride,Tin Sulfate,Tin Chloride,Erbium oxide,Cerium oxide,Neodymium oxide,Cuprous Bromide,Lanthanum oxide,Yttrium oxide,chemical.
- Address:8 / F Metro Centre II
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