When people first came into contact with 7 day candle jars a hundred years ago, ordinary people could not afford to consume them. Due to production and cost problems, it was not ended by Volkswagen, mainly cost; Much higher than the iron candlestick of the same period;
With the technological revolution, production technology and mechanical revolution, production and cost plummeted, the market 7 day candle jars became popular;
Nowadays, many high-quality jars can mimic the texture of crystal, and people can buy 7 day candle jars for very little money.
