Riyadh, April 14, 2019, SPA -- Six trainees at Technical and Vocational Training Corporation (TVTC) have won two gold, two silver and two bronze medals in 47th International Exhibition of Inventions of Geneva. The inventions include an automatic opening and closing cup, a smart waste container, generating electricity from sand, an economic air conditioner, smart waste box and easy-to-store table. The 47th Geneva Invention included more than 800 inventions from 40 countries in 21 fields of industry, telecommunications, health, and others, in addition to the participation of international organizations of invention, related parties and specialized companies. --SPA 12:01 LOCAL TIME 09:01 GMT 0004 www.spa.gov.sa/w1084703