Guangdong Ellington Electronics TechnologyLtd, a mature business, hasn't seen much growth in the last five years. Unless there's a positive shift in ROCE and capital employed, it may not be a promising investment.

The company's low P/E ratio is attributed to its underperformance in three-year growth compared to market predictions. Investors doubt the potential for significant earnings improvement, which could justify a higher P/E ratio. If recent medium-term earnings trends persist, a strong share price rise seems unlikely.

The declining trend in ROCE and stagnant capital employed aren't encouraging signs for the company's growth potential and could dampen investors' interest. It'd be advisable to consider other investment alternatives.