Every time in the world of manufacturing, we are always required to Improve, improve and Improve. If the company wants progress must always make improvement every time. Improvement is based because of increasing competition in the product, both types of products and quality on the market. Some of the principles that must be held by the manufacturer to develop the company can be described as follows: 1. Improvement must be general and easily applied Methods of improvement are made, as far as possible should be applied by all members of the company. But if it is not possible to be arranged so that member companies that deal directly with the product can contribute to improvement of the methods that have been made.