What is meaning of Dailywell products show IP65, IP67 and IP 68?

What is meaning of Dailywell products show IP65, IP67 and IP 68?

IP is an acronym for "Ingress Protection" against objects that intrude into the enclosure of any type of equipment. The IP ratings are defined in the IEC standard 60529, which was developed by the lnternational Electrotechnical Commission. Specifically, IEC 60529 defines an enclosure as, "a part providing protection of equipment against certain external influences and in any direction protection against direct contact."
The IP rating is formatted as "IP" followed by two digits. The first digit indicates a protection level against solids such as dust, and the second digit indicates a protection level against liquids. Figure 1 illustrates the IP formats and uses IP56 as an example. Below table is for explanation.

Press Release