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The design, raw materials acquisition, production, consumption, tracing service and recycle of low-carbon products form a circle; c) implementation of cleaner production scheme.
Enterprises should, in line with their own strength and product attributes, build a distribution network of low-carbon products, strengthen low-carbon awareness of distribution members and attach importance to the use and recycle of packing materials and energy conservation in the transport process.
References: [1] Jing Guo: Science and Technology Daily(2010) [2] Xiaolin Liu: China Tourism Daily(2010) [3] Feilun Du: China Economic & Trade Herald(2009)
[4] Zhaozheng Liu: Journal of Party School of the Central Committee of C.P.C (2009)

Experiment Material.
The experimental material was J55 tubing and casing steel, and its chemical composition (mass fraction, %) is shown in Table 1.
Research on crevice corrosion of oilfield materials in saturated CO2 salt solution[D].
Hubei: Huazhong University of Science and Technology, 2008
Journal of Chinese Society for Corrosion and protection, 2007, 27(4): 247-251

Materials 13.8 (2020): 1924
Applied Sciences 9.11 (2019): 2360
Materials 15.16 (2022): 5563
The International Journal of Advanced Manufacturing Technology 113 (2021): 623-648
Materials Today Communications (2023): 106449

Material and Methods 1) Material: Dregs provided by Sankang Food Factory, Jiangxi Agricultral University. 2) Reagent: Chloroform, butanol, acetone, phenol, sodium bicarbonate, sulfuric acid, 95% ethanol and anhydrous ethanol were of analytical grade. 3) Method: Dregs were put into the oven drying, grinding, then putting away in a sealed container.
China, vol. 25, Soybean Science, pp.28-31, 2006
China, vol. 28, Foreign Medical Sciences (Section Hygiene), pp. 129-132, March 2001
China, vol. 26, Food Science, pp. 302-305, September 2005
China, vol. 31, Chinese Pharmaceutical Journal, pp. 550-552, 1996.

Polyethylene glycol (PEG-200) and itaconic acid (IA) were used as raw materials to compound macromer through esterification reaction.
The semi-coke powder was selected as raw material.
The industrial analysis and elemental analysis of raw material were in the Table 1.
Coal Science and Technology, 2008, 36(12):90-93 [6] Zhou Mingsong, Kong Qian, Pan Bing.
Journal of Fuel Chemistry and Technology, 2006, 34(2):160-165

In order to simplify the mathematical model of PMSM, we make the following assumptions: 1）Magnetic saturation, hysteresis and eddy current losses can be ignored as well as magnetic circuit is linear. 2）There is no damper winding on rotor and permanent magnet can generate sinusoidal magnetic field in the air gap, without higher harmonics. 3）The electrical conductivity of permanent magnetic material is zero and the magnetic linkage generated by permanent magnet is cross-linked with stator completely.
Foundation item: Quzhou science and technology plan project: Application development of voltage space vector PWM in numerical control machine servo system (20101039) References: [1] Tang Ren-yuan.
Journal of Zhejiang University: Engineering Science,2007, 41(7): 1107-1110
Journal of Zhejiang University: Engineering Science, 2006, 40(7): 1276-1280

Review of the Application of Water Pinch Technology in Water-saving and Emission Reduction Lihong Meng1, a, Qi Qiao1 and Jingyang Liu1 1 Chinese Research Academy of Environmental Sciences, Beijing 100012, China ayuduanhongri@163.com Keywords: water pinch, water-saving, emission reduction Abstract.
Acknowledgements This work was financially supported by the Major Science and Technology Program for Water Pollution Control and Treatment (2012ZX07202-001) and Program of International Scientific and Technological Cooperation (2010DFB90590).
American Institute of Chemcal Engineering Journal, 1989, 35(8) : 1233~1243 [3] Wang Y.
Journal of North China Electric Power University, 2004, 31(6) : 17~19 [11] Li Ying, Yao Pingjing: Advances in water distribution network design.
Environmental Science & Technology, 2008, 31(2): 140~143 [20] Takama N, Kuriyama T, Shiroko K.

Liu: Chemical Engineering Science Vol. 62 (2007), p. 3502
Iglesia: Chemical Engineering Science Vol. 58 (2003), p. 4605
Marek: Chemical Engineering Science Vol. 62 (2007), p. 5380
Mortezaoglu: Chemical Engineering Journal Vol. 93 (2003), p. 143
Coppens: AIChE Journal Vol. 50 (4) (2004), p. 812

Either research-based or teaching-oriented, or science and engineering, and whether new construction or long histories, each school in the birth process of development, owing to the social and natural conditions, form their own unique traditional use of color. 
Such comfort feeling is not only material but also psychological, from the point of students’ aesthetic and emotional factors.
Determined by the road construction material, generally, the colors of carriageway are dark, and form the foil of the surrounding environment.
For the way only used for people to step, the colors and materials should be varied. 
[4] Jun Du, Lin Gan:Journal of Hebei Polytechnic University (Social Science Edition) Vol.6(2006), No.4,p. 125-127,in Chinese

Previous studies focus more on the influence of socio-economic factors such as dynamic mechanism on the spatial morphology of these towns and studies of material elements put too much emphasis on subtle elements.
This is the question of reality [7] still existing after the material and economic conditions of towns have been greatly improved.
Rivers cannot meet the increasing demand of towns for exchange of materials with the outside world.
Suzhou: Architecture and Urban Planning Institute, Suzhou Science and Technology College, 2008
Journal of Anhui Agricultural Sciences, 2010 (5).18-19