How many specifications are there for the 3rd generation lean management?

How many specifications are there for the 3rd generation lean management? SUNQIT manufacturers have a total of 17 standardized lean tube specifications, including basic aluminum tube, yellow basic aluminum tube, T-shaped groove aluminum tube, reinforced aluminum tube, single-sided aluminum tube, double-sided aluminum tube, double basic aluminum tube, thin-walled basic aluminum tube, double basic aluminum tube B, roller shaft circular aluminum tube, roller shaft waveform aluminum tube, clamp groove aluminum tube, T-shaped groove aluminum tube, electric batch aluminum tube, lean aluminum profile, T-shaped groove lean aluminum profile, and so on.