[1] Li manzhi. Cost management: the magic weapon for enterprises to win [J]. Contemporary economy, 2000, 7: 0 12.

[2] Sheng Weiwei, Zhu Jian. On material management in construction site [J]. Jiangsu Building Materials, 20 13 (4): 56-58.

[3] Tang Rong. Procurement Cost Control in the Environment of Supply Chain Management [J]. Railway Freight Transport, 2008 (3):1-13.

[4] Gao Xinhe, Chen, Cai Xiping. Study on raw material supply mode of crop straw wood-based panel industry [J]. Forestry Economy, 2006 (5): 34-36.

[5] Wang Wei. Reflections on the internal logistics management of small and medium-sized enterprises [J]. Modern Commerce, 2009 (8): 139- 139.

[6] Zhang Dezhou, Song Xuelian. Analysis of supplier relationship selection based on purchasing category in supply chain management [J]. Modernization of shopping centers, 2006 (04x):13-14.

Wang Ping. Thoughts on the Optimization of Procurement Cost in Construction Machinery Industry [J]. Journal of Hunan University of Finance and Economics, 2009,24 (6): 90-92.

Liu Hui, Ma Hanwu. Research on Cooperation Mechanism of Value-added Procurement in Supply Chain Environment [J]. Jiangsu Business Theory, 2006 (5): 27-29.

Zou An, Liu Zhixue, Analysis of quantitative decision-making model of purchasing alliance based on supply and demand [J]. System Engineering, 2008,26 (1):120-123.