In which year did Liu Fu Di Chin Science and Technology obtain the national patent?
202 1 year. Liu Fujinlv Technology obtained the national patent in April 20021year. Luk Fook Group was founded by a group of senior jewelry professionals on 199 1 and listed on the main board of The Stock Exchange of China Limited in May 1997. It is one of the major jewelry retailers in China, Hongkong and China.