Sustainable development, after all these years development, has already been accepted as one of the themes of 21st century, especially after the reveal of some serious environmental problems, such as global warming, resource exhaustion, etc. Construction industry, although being considered as one of the traditional industries of which the development speed is slowing down, is currently still playing an important role in the society and economy system. Meanwhile, it is also an industry that relies heavily on resources and energy consumption, especially the construction manufacturing industry. As a result, the pursuit of sustainability within the construction industry seems to be inevitable. In order to stimulate and push for the green transitioning in the construction industry in Europe, the European Commission issued the Green Public Procurement policy to motivate manufacturers of building products to develop green products and technologies. As a gesture of support, many member states quickly issued their own GPP policies which are more tailored for their specific situations. However, many challenges stand in the way toward fully implementation, and one of which is the shortage of qualified suppliers. Many existing literatures elaborate on the possibility of solving this challenge from the perspective of public authorities. This research, however, looks at this challenge from a different angle, the perspective of manufacturers of building products. This research studies into the flooring industry and intends to develop some suggestions for manufacturers who plan to develop green products based on the successful experiences of some frontrunners. To realize this objective, research questions are developed in this study: 1) What are the GPP requirements for flooring products in public construction projects and how are they evaluated? 2) What are the enablers and barriers during the development of green products? How do these factors get influenced by GPP policy? 3) Given the enablers and barriers, how can manufacturers of building products adjust their product development strategies to meet GPP criteria? What green attributes should be emphasized on during green product development? A literature review was conducted to find answers for the first research question. The EU GPP criteria are made for general terms of building products with no specification for each category. Two sets of criteria are contained in the EU GPP criteria, the core criteria and the comprehensive criteria which are built on the former. The main requirements of the core criteria are that products compete for public tenders should either be eco-labeled or provide detailed LCA reports to prove their environmental performance during life cycles, and if the products are wooden based, then the wooden materials are supposed to be responsibly sourced. The comprehensive criteria, based on the core criteria, add two more requirements regarding the recyclability of the products and the amount of recycled materials that should be contained in the products. In public tenders, the core criteria work as selection criteria for the qualification of suppliers, while the comprehensive criteria act as award criteria. Apart from the general EU GPP criteria, eco-label criteria can also be used as evaluation references. The eco-label criteria, comparing to the EU GPP criteria, are more detailed and specified. Three subgroups for the flooring products are made by the eco-label criteria, namely hard flooring, textile flooring, and wooden flooring. These criteria consider every stage and aspect in the life cycle of products, and only products fulfill all of them get to wear the labels. Case studies were conducted to research into question 2 and 3. Three frontrunner companies in the flooring industry who have successful experiences in marketing green products were interviewed, in order to identify the enabler and barriers of green product development process as well as some recognizable green product attributes. Main findings on enablers and barriers are listed Table A. As for the influence of the GPP policy, interviewees claimed it to be limited, mostly because they developed green products before or along with the development of the GPP policy. Enablers: 1) Motivations: concern for the sustainable development of the company; concern for the competitiveness of products; concern for the image of the company; market requirement. 2) Success factors: partnership; in-house knowledge base; government subsidies. Barriers: 1) worries about future uncertainty: high price perception of customers; low functional performance perception of customers; future uncertainty (policy change, market requirement change, etc.). 2) Practical difficulties: difficult to sell at competitive prices; development cost; need for extra knowledge and expertise; loss of government subsidies; stringent public scrutiny. Some of the most mentioned green product attributes by the interviewees are: - Toxin-free raw materials - Containment of recycled contents in products - Recyclability of products - Reduction of production wastes - Use of renewable energies - Closed-loop water recycling systems. Based on these findings, some recommendations are given for manufacturers of flooring products who plan to develop their own green products in the near future: For enablers: - Bring the plan of developing green products up to schedule to meet future market demand. - Build stable and cooperative relationships with main raw material suppliers and lead clients. - Start to cultivate in-house knowledge base for green product development. - Look out for government subsidy plans, and build project based on that. For barriers: - Consider long tern return on investment when setting prices for green products. - Try various ways to gather the initial investment, such as loan, partner investment, government subsidies, etc. - When choosing what green certificates to apply, consider the zone of influence of the certificates and the market area and supplying sector of the focal company. For green attributes: - Use toxin-free materials in the products. If greener alternative is not available yet, then keeping the toxic materials below safe limits is necessary. - Contain certain amount of recycled materials in the products. - The design of the products should enable recycling. - LCA assessment report shall be provided. - Use green packaging. - Use renewable energy in production. If not possible, then energy saving plans shall be applied. - Consider using water in closed loops. If not possible, then waste water should be processed before discharging to keep certain materials below required limits. - Consider reutilizing production wastes and by products.