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Greenhouse gas emissions have serious impacts on the natural environment. Therefore, the restrictions imposed on carbon emission force enterprises to take carbon emission into consideration when making production decisions. In this paper, in the context of allowing emission trading and investment of emission reduction technology, models were presented for a two-stage supply chain to analyze the optimal investment and pricing decisions. The results indicate that manufacturer's endurance capacity of reduction difficulty is higher in the cooperation model than in the Stackelberg game model, and that perfect coordination of supply chains can be realized by a revenue sharing contract. From the perspective of a consumer, low-carbon products mean higher price, so that subsidies or tax exemptions should be provided to keep low prices. Meanwhile, the government can promote investment in emission-reduction technologies and achieve its emission reduction targets by controlling emission trading price, strengthening emission reduction publicity and providing technology investment subsidies.

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Purpose-Fresh product loss rates in supply chain operations are particularly high due to the nature of perishable products. This paper aims to maximize profit through the contract between retailer and supplier. The optimized prices for the retailer and the supplier, taking the fresh-keeping effort into consideration, are derived. Design/methodology/approach-To address this issue, we consider a two-echelon supply chain consisting of a retailer and a supplier (i.e., wholesaler) for two scenarios: centralized and decentralized decision-making. We start from investigating the optimal decision in the centralized supply chain and then comparing the results with those of the decentralized decision. Meanwhile, a fresh-keeping cost-sharing contract and a fresh-keeping cost-and revenue-sharing contract are designed. Numerical examples are provided, and managerial insights are discussed at end. Findings-The results show that (a) the centralized decision is more profitable than the decentralized decision; (b) a fresh product supply chain can only be coordinated through a fresh-keeping cost-and revenue-sharing contract; (c) the optimal retail price, wholesale price and fresh-keeping effort can all be achieved; (d) the profit of a fresh product supply chain is positively related to consumers' sensitivity to freshness and negatively correlated with their sensitivity to price. Originality/value-Few studies have considered fresh-keeping effort as a decision Page 1 of 40 Industrial Management & Data Systems variable in the modelling of supply chain. In this paper, a mathematical model for the fresh-keeping effort and for price decisions in a supply chain is developed. In particular, fresh-keeping cost sharing contract and revenue-sharing contract are examined simultaneously in the study of the supply chain coordination problem.

Quality information acquisition and disclosure have significant ramifications for supply chain members. This study investigates the interaction between a manufacturer’s product quality information acquisition and different product quality information disclosure systems in a supply chain wherein the manufacturer can privately acquire the precise quality information of its product by affordable means initially. We consider two different quality information disclosure systems for the quality information acquisition: voluntary disclosure (i.e., the manufacturer determines whether to disclose the quality information that he has acquired), and mandatory disclosure (i.e., the manufacturer is mandated to disclose the quality information that he has acquired). We examine the effects of voluntary disclosure and mandatory disclosure on the equilibrium strategies and payoffs of the manufacturer and the retailer and on the consumer surplus. It is shown that mandatory disclosure significantly reduces the manufacturer’s incentive to acquire the precise product quality information and leads to a reduction in the product quality information that the retailer and the consumers can receive. Interestingly, although the manufacturer is ex ante better off, the retailer’s ex ante payoff and the expected consumer surplus become lower under mandatory disclosure, as opposed to voluntary disclosure of product quality information.