L is the factory standard, and k is the unit of gold content. According to the query of Baiqu Circle, Lao Fengxiang is a trademark and L is a factory logo (there are many factories in Lao Fengxiang, and there are also processing factories, so there are usually factory logos behind them). Pure gold is 24K gold, which is lower than thousands of pure gold. Lao Fengxiang is a century-old national brand and a famous jewelry brand in China. Listed companies, top 500 Chinese enterprises.