https://www.reuters.com/article/us-samsung-elec-results-preview/samsung-electronics-braces-for-profit-drop-as-china-slowdown-chips-away-at-demand-idUSKCN1P00PC >Samsung Electronics Co Ltd is set to post its first drop in quarterly operating profit in two years as slowing economic growth in China, a key market for the South Korean tech giant, erodes demand for its products.