Purpose: The aim of this paper is to deal with the supply chain management (SCM) with quantity discount policy under the complex fuzzy environment. which is characterized as the bi-fuzzy variables. By taking into account the strategy and the process of decision making. a bi-fuzzy nonlinear multiple objective decision making (MODM) model is presented to solve the proposed problem. https://thebrickes.shop/product-category/full-mattress-set/