English 
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15 Series15 means the section size is 15mm, Jinlv offers 1530,1560,1590 three kinds of profile with 6mm slot. -
16 SeriesINLV can provide customer sectional dimension from 20*20 to 120*120 industrial aluminum profiles -
20 Series20 Series means the section height is 20mm,Jinlv offers another section have 40/80/120/160.
