Customized model selection is an important work that needs to be determined by the host company or airline company when selecting products. The determination of the model selection mode is closely related to customer demand, technical maturity of installed systems or equipment, R&D investment, market prospect and other factors. Airlines and host companies need to fully communicate and cooperate with suppliers. The appropriate selection mode can help the suppliers develop their products towards the market, help the main manufacturer deal with the additional costs of design, production and management brought by new products in advance, help airlines effectively comply with airworthiness regulations, layout route planning and market application promotion in advance, and realize the win-win situation among airlines, host units and suppliers. Combined with new product engineering cases at home and abroad, this paper puts forward a mixed selection mode based on the traditional modes of SFE(Seller Furnished Equipment) and BFE(Buyer Furnished Equipment), makes a comparative analysis around the aspects of contract relationship, business price, product support, delivery responsibility and other restrictions, and puts forward the applicable premise under the mixed mode.