Two technologists have won prizes at an inventors' competition in Hungary. Mok Sui-cheung and Moses Lam Kin-man took three awards at the international inventors' Olympiad in Budapest earlier this month. Mr Lam, technology director at an Australian-owned health products company, won a silver medal in the human necessities section with four 'high-energy' essential oils, which he claimed could improve metabolism and help the body ward off disease. The making of the oils involved low electric frequencies, unlike oils that are more commonly available on the market. Mr Lam collaborated with a Singaporean company specialising in hi-tech equipment to examine the effects of the oils on improving circulation. He is now negotiating with several companies in Hong Kong to release them on the market. He also won a prize for his design of an energy device to remove impurities in drinks. Mr Mok, who is general manager of an electronics design company, won a bronze medal in the sound and heat transfer section for his design, which translates music into visual patterns and projects them on to a screen. The invention can help musicians and people with hearing difficulties, he said. 'While musicians used to learn composition through theory alone, they can now make use of visual patterns to enhance their understanding of music,' he said. 'The deaf and dumb will also be able to use visual tools in learning how to speak.' Mr Mok and Mr Lam represented the Hong Kong Inventors' Association at the competition. The association has more than 100 members. It has called on the Government to support technologies outside of the Internet and e-commerce.