Method for compiling wire and cable models

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Method for compiling wire and cable model numbers; Explanation of model composition. Wire and cable product model numbers are represented using Chinese Pinyin letters. The Pinyin letters in different positions of the model number indicate the structure of the cable; items 1–5 are expressed in Chinese Pinyin, while items 6–7 are expressed as numbers. To reduce the number of letters and numbers in the model designations, letters that refer to commonly used materials in a product can be omitted. For example, in the models of ordinary copper-core wires and cables, the code “T” is not included; in power cables, the code relating to strength is not used; for wires and cables with normal voltage levels, the code “low” is not used, while high-voltage products can be indicated with the letter “G”. The meanings represented by pinyin letters in product models (words without parentheses):
A: (Poly)amine (ester), installation, aluminum-plastic sheath (Alpeth)
B: flat, half, weave, pump, fabric, (poly)styrene, glass fiber, repair, parallel
C: vehicle, alcohol, excavator, porcelain, heavy-duty, marine, battery, magnetic charging, compensation, (yellow wax) silk, (tri)acetic acid film, self-supporting
D: belt, (non)draining, lamp, electricity, (cold) resistance (i.e., cold tolerance), butyl rubber, plating
E: two (layers), outdoor, symmetric structure (code), ethylene propylene rubber (EPR)
F: (polytetra)fluoroethylene, phase separation, non-flammable, airplane, foam polyethylene (YF)
G: steel, groove, modified paint, pipe, high pressure
H: alloy, epoxy paint, welding, pattern, communication cable (usage code), H (H-type, i.e., phase-separated shielding structure), cold
J: twisting, strengthening, thickening, sawing, local use
K: vacuum, Kapron, control, armored, hollow
L: aluminum, furnace, wax, asphalt, (lightning) protection, phosphorus
M: cotton yarn, hemp, main wire, cap, film
N: (self)adhesive, charcoal, high-damping (wire core), nylon, fire-resistant
O: coaxial (structure code)
P: arrangement, (core) shielding, wiring, poor impregnation (i.e., dry insulation), signal cable (usage code)
Q: tractor, paint, lead, light-duty, gas, automobile, high-strength polyvinyl acetal
R: soft, artificial silk, daily use (usage code), (heat) resistance. S: Brush, silk, radio frequency (code for purpose); double, steel-plastic sheath (Stalpeth); low-smoke, halogen-free flame-retardant sheath. T: Copper, ladder, special, general, ceramic, elevator, exploration. U: Mining, cotton (referring to asbestos); used in mining (code for purpose). V: (P)V(C) (polyvinyl chloride). W: (Earth) physical properties; corrugated sheath; non-magnetic; resistant to high temperatures; for outdoor use; petroleum (code for purpose). X: Rubber (for strength cables), polyamide, rubber insulation. Y: Rigid, round, oil-resistant, oxygen-resistant; resistant to oils; for mobile use (code for purpose); polyethylene, compressed. Z: Polyester, paper, electric drill; medium size, comprehensive. YJ: Cross-linked polyethylene insulation. P2: Copper tape shielding. ZRK: Series code, indicating a flame-retardant control cable