Growth Enterprise Market-listed Chinese medicine-maker Tong Ren Tang Technologies last year had an 83.52 per cent surge in net profit to 99.79 million yuan. Turnover was 497.37 million yuan, up 46.84 per cent. Earnings per share on a diluted basis were 55 fen, up from 44 fen a year earlier. A final dividend of 30 fen will be paid.