How to name rock type mining explosives?

The naming rules for rock-type explosives are as follows:

The name of the rock-type explosive is composed of five parts, and its general form is: (1) (2) (3) - (4) (5). For example: SYG—3K

(1) Representing the drug type, using a larger or a capital letter followed by a lowercase Chinese pinyin: S-water gel explosive; J-slurry explosive; A-ammonium ladder explosive; Ah-ammonium black explosive; Al-ammonium wax explosive.

(2) Indicates applicability, expressed in a capitalized Chinese phonetic alphabet: Y-rock type.

(3) Demonstrate the power of explosives, expressed in a capitalized Chinese phonetic alphabet: G-high power; Z-zhong power; D-low power.

(4) Indicates that different grades are represented by Arabic numerals and are generally arranged in the order of identification or registration.

(5) indicating a certain characteristic of an individual variety, represented by a capitalized Chinese phonetic alphabet; K-resistant to water.