1.high quality 2.OEM service available 3.size 1/2"x1/2", 1/2"x3/4" 4.six year's experience of drain and triangle valve Specializing in high-grade copper floor drain, floor drain fine stainless steel, zinc alloy floor drain, basin water control, triangle valve production and sales We can production products independent ,also can according to customer's drawings.Six years guarant,a young engineer, ...