What is the fine-grained topic of the following text: We normally believe that one's character decides products' quality, the details decides products' high-quality ,while using the REALISTIC,EFFICIENT AND INNOVATIVE staff spirit for Pa66 Material , pa66 material , pa6 material , Now with the development of internet and the trend of internationalization we have decided to extend business to overseas market. Only return the topic.
International business expansion and product quality improvement through character and innovation