PASS ISO9001:2000, TS16949 OEM PRODUCING OF METAL PRODUCTS STANDARD:DIN, ISO,JIS,AISI NINGBO LONGTENG METAL MANUFATURING CO., LTD professionally manufactures precious shaft, pins, shaft, bushing,nuts, bolts, screws accordance with the standards of GB, ISO, DIN, AISI and JI. We especially have advantage at non-standard hardware. Our company founded in 1995, situated at NINGBO INTERNATIONAL AIPORT, ...