D.S.L is Chinese professional leading aluminum slat material manufacture , Established in Zhejiang Province in 1994.  We have more than 27 years of experience in supplying aluminum slat material for Venetian Blinds，DSL brand is a leading brand in shading industry in China. The annual output is more than 6000 tons of coated aluminum alloy slats, more than 60% are exported, DSL is one of the world’s largest suppliers of coated aluminum alloy slats.