Canza wurin aiki na Shanghai Stymes Co., Ltd. (Shang. (Shang. (Shang. (Shang Shhan yana da cikakken tsarin tabbatarwa daga ƙira, masana'antu, dubawa da isarwa. An ba shi tabbaci tare da Iso9001, ISO14001, OHSAS18001 kuma riƙe Asme U takardar shaidar.