Shandong Tuoweisheng Chemical Technology Co., Ltd. (TWS Chemical) places great importance on quality management, compliance, and continuous improvement. Through our integrated resources with Shandong Tuoweisheng Chemical Technology Co., Ltd. and Shandong Linxi Chemical Technology Co., Ltd., we have established a reliable quality control and supply chain management system. We continuously improve our quality assurance capabilities through professional management systems, product inspection reports, and relevant certifications, ensuring stable, safe, and reliable chemical supply for our customers worldwide. Some certificates are issued under Shandong Linxi Chemical Technology Co., Ltd., which is part of our corporate group and supports our chemical production, supply, and quality management operations.