It is necessary to examine the market demand. But it seems that I heard, Huang Zhenlong herbal tea is not allowed to join. This is the information I found on the Internet, I hope you can help: Huang Zhenlong external claim is not allowed to join, but in fact, if the relationship can also be, but it is too black, the franchise fee to 5 years 200,000, but also a time to pay off, profit margins are also pressed very low, my friend said only 40%. My friend also said, in fact, Huang Zhenlong company is not Huang Zhenlong himself, is Huang Zhenlong's youngest son called Huang Fuqiang opened, this kid is very unethical. Huang Zhenlong seems to have several sons, the eldest son called Huang Zhiqiang, is now the chairman of the Ping An Tang herbal tea, originally the secret formula is passed on to Huang Zhiqiang, Huang Zhiqiang this person is very kind. Huang Fuqiang was originally engaged in the renovation in Hong Kong, and then look at his big brother to make money to ask for the secret formula, to be after the registration of the Huang Zhenlong trademark, but also told his big brother, Huang Zhiqiang: the future of Huang Zhenlong trademarks can only be used by him, no one else can use it. Big brother Huang Zhiqiang no way, let his brother Huang Fuqiang, take the Ping An Tang trademark business herbal tea, but Huang Fuqiang this guy and snatched the Ping An Tang trademark, brother Huang Zhiqiang no way, and then see the lawsuit, the court ruled that Huang Zhenlong company chairman Huang Fuqiang maliciously snatched, Ping An Tang trademark to the big brother Huang Zhiqiang all. Huang Fuqiang simply can not be counted as Cantonese, he has long been a Canadian nationality, is later back to invest, even the Cantonese culture do not understand still do herbal tea.