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Hongli Optoelectronics is mainly engaged in research and development, production and sales of LED devices and their application products. 
Hongli Optoelectronics: LED packaging products have relatively stable gross profit margin
"G20-LED Summit member companies" Hongli Optoelectronics (300219) revealed in the latest "Investor Relations Activity Record Form" that in 2014, the gross profit margin of the company's LED packaging products was relatively stable, and there was no significant fluctuation. The price of LED products in the future will be mainly affected by factors such as LED technology advancement and industrial scale expansion.