Water Health Nano 863 was very popular a few years ago. Why haven't you moved for years? Is it gone?

In the past, the market for Nano 863 was very hot. Later, Ding, the chairman of Keruihua Company, invested a lot of money to buy out the technology and patent, and re-produced and upgraded it. Now it is named Water Health Nano 863. The company strengthened its management and established the after-sales service department. In a short period of six months, it has provided after-sales service to more than ten thousand users of 10 for nine years, which has won unanimous praise from users.