This research was conducted in the field of convection, where convection is currently developing with the existence of e-commerce so that consumers can easily get the goods they want. So that companies must be able to improve the quality of their products and also increase their income by using Statistical Quality Control (SQC) so that the products produced by entrepreneurs remain within the standard limits set by the company and the market also produces the best products. The purpose of this study was to determine the quality control and the factors that cause defects in a product. The method uses Statistical Quality Control (SQC) using inspection sheets, scatter diagrams, cause and effect diagrams, Pareto charts, flow charts, histograms, and control charts. The results of the control chart analysis show that there are points that are outside the control limit. Based on the fishbone diagram, the factors that cause product damage come from human factors, raw material factors, method factors, machine factors, and environmental factors.