Constant is a brand under Yiwu Chaolan Import&Export Co.Ltd.Constant scales was established in 2006.lt specializes in production of various scales,Dedicated to providing customers with innovative products and health standard management solution,providing the best service for the health of the human family Products include: body scale, Fat scale, Counting scales, barcode printing scale,network scale and so on. At present, our products are well-received on the market both at home and abroad, and has won unanimously high praise from our customers.