欧美一级黃色A片韩国_日本A A免费在线播放_中文字幕成人电影_日韩一级性爱_六月天婷婷丁香_黄色A片三级片

SHANDONG DONGKE CHEMI-INDUSTRY AND SCIENCE CO.,LTD. It is located in coastal economic development zone of Weifang, Shandong University of Science and Technology as the technical support, the company is committed to the development and production of environmental flame retardants, pharmaceutical intermediates, pharmaceutical raw materials, new additives. Its sales operations throughout the country and the world's major regions.
Companies adhere to market-oriented, timely collection of market information, and strive to do service work. The company has always regards product quality as enterprise life. To ensure the quality of products, the company vigorously promote the implementation of ISO9001 quality system, and a strong scientific research, quality analysis and advanced analytical instruments and excellent physical and chemical analysis tools to ensure that the hands of each to your products are perfect.
In the company of "unity and hard work" as the admonitions of the circle, "seeking innovative" spirit of enterprise. Targeting the development into a science and technology, environmental technology development and application of focus to exports as the main service. Strive to become well-known export-oriented high-tech industry group.