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Thanitnan Chanyeam
Ungul Laptaned


The objectives of this research are to 1) study factors affecting the value chain performance and level of customer services, 2) study the influence of factors affecting to the value chain performance for wholesales and retails of steel products, 3) study the influence of factors affecting to level of customer services for wholesales and retails of steel products, and 4) study the process and criteria to manage the supply chain of the steel industry to offer guidance in response to customer demand. This research is a quantitative and qualitative research. The sample consisted of 400 samples of the steel sector. The quantitative research collected the disruption the demand chain and supply information affecting to the value chain performance and levels of customer services. The quality research focused on factors affecting to business management for steel factories. The random sample of Taro Yamane and methodology is a questionnaire and data analysis and the validity of the model, a causal relationship.

          The results showed that the model was fit to the empirical data, with the index value, the harmonized index of six qualified acceptance of the index are = 183.809, df = 161, p-value = 0.105, /df = 1.142, CFI = 0.998, GFI = 0.962, AGFI = 0.935, RMSEA = 0.019 and RMR = 0.012. Therefore, it is concluded that Models, structural equation modeling is appropriate. Harmony with the empirical data. The result reveals that the demand chain disruption directly affects to demand planning in the positive way, the demand chain disruption directly affects to demand planning in the positive way, demand planning directly affect to the value chain performance in the positive way and value chain performance directly affects to level of customer service in the positive way.

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