This study is motivated by service quality which is one of the most influential aspects in the success of a business. PT. SAC as a service provider company is required to always pay attention to service user satisfaction with the services provided. This research is quantitative research. Data collection was obtained from primary data from the results of questionnaires with questions that had been asked by service users via Google Form. Questionnaires were given to 30 service users randomly. Data was collected during the MBKM internship at PT. SAC for 5 months, starting on 1 August 2023 – 31 December 2023. Data processing was carried out using validity and reliability tests. Data processing was carried out using the SPSS application to find solutions to the above problems. Valid, namely that data processing must be carried out properly and correctly. The results of the reliability test calculations show that all r calculations for each question, namely, R1 to R9, show a value greater than the r table, namely 0.361, so by using a significance level (?) of 5%, the questionnaire studied is valid. The Cronbach Alpha value shows 0.742, which means it is greater than the r table, namely 0.361 with the Cronbach Alpha value.

PT. PG X is part of ID FOOD which focuses on the sugar cane agro-industry sector. SHS sugar is the main product. To ensure production meets consumer standards and expectations, it is necessary to implement quality control during the production process. This involves quality control, improvement and improvement of systems so that the products produced are superior and competitive. In writing this article, the author is interested in exploring the problem of product defects and deviations in the production process, including defective products, as well as efforts to improve and improve product quality. The problem solving method used is the six sigma method. From the research results, it was found that the total production produced during October was 48,611 and 3,283 defective products were found. In the sugar production section, PT X Sugar Factory has a sigma level of 3.7 with a possible damage of 24,635 for one million production (DPMO).