Despite declining revenue, Jiangsu Rijiu Optoelectronics' P/S ratio remains high, indicating investor optimism. However, without significant medium-term improvements, the share price may drop, bringing the P/S ratio to a more reasonable level.

Unjustifiably high P/S ratio and negative growth rates indicate shareholders may face future disappointment. The company's higher than expected trading despite declining revenues signals potential shareholder challenges.

Jiangsu Rijiu Optoelectronics has been reinvesting its funds back into the business but hasn't seen much sales growth. The declining trend in ROCE and the fall in stock price indicate market pessimism about the company's growth prospects.