Shandong Xinda Luxin Waterproof Materials Co., Ltd., nyob rau hauv Weicheng District, tau tsim nws lub koob npe nrov rau thawj underwater qhov nyob rau hauv Tuam Tshoj - Xiamen Xiang'an Underwater Tunnel Project. Rau 28 xyoo, nws tau tsom mus rau kev tshawb fawb thiab kev loj hlob ntawm polymer waterproof khoom thiab cov kev pab cuam, maj mam loj hlob mus rau hauv ib tug thawj coj ntawm polymer waterproof khoom nyob rau hauv Tuam Tshoj.