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Global Manufacturer Identification Symbols
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Country or Region Company Symbol Note
America Bolts of America LLC 01XM
China Mainland Shanghai Yuandong High-strength Fastener Co., Ltd. YD
China Mainland Hangzhou Damao Technology Co., Ltd. DM
China Taiwan Charng Houng Mfg. Co., Ltd.
China Mainland Hebei Beiyi Fastener Co., Ltd. B1 or 丠 or 北一
America Anatase Products OJ8 or A
China Mainland Longyan Precision Hardware (Suzhou) Co., Ltd. LY
China Mainland Jinshang Technology Co., Ltd.
China Taiwan Fang Sheng Screw Co., Ltd. 01EI
America Mid West Fabricating Company
America Semblex Corporation
Italy Ferriere di Stabio S.A. F S or FS
China Mainland Ningbo Zhongyi Fastener Co., Ltd. NZY
India Ridvan Fasteners India Pvt Ltd 01WU
China Mainland Zhenkunxing Industry Supermarket (Shanghai) Co., Ltd. ZKH
China Mainland Beijing Standard Components Industry Group Co., Ltd. C or CC
China Mainland IIMANK Group IMK
America Ameriforge Group Inc.
China Mainland Ningbo Zhongfeng High Strength Fasteners Co., Ltd. ZF
China Mainland Shanghai Jinma High Strength Fastener Co., Ltd.
China Mainland Hubei Heng Yi Automotive Fasteners Co., Ltd. EG
China Mainland Ningbo Joy International Trade Co., Ltd. MAX
China Mainland Shanghai Yaluo Precision Fastening Technology Co., Ltd. / Jiangsu Suluo Industrial Parts Co., Ltd. ATM
China Mainland Hebei Bondewei Import and Export Trading Co., Ltd. BD
China Mainland Tianjin Century Jiulong Fastener Manufacturing Co., Ltd. J.L
China Mainland Shaoxing Niuli Fasteners Co., Ltd. NN
China Mainland Zhejiang Yuejia Standard Parts Co., Ltd. WTL
China Mainland Leng Shui Jiang Tian Bao Industrial Co., Ltd. TBF
America Sunpack of Pensacola, Inc. 01XP
China Mainland Zhejiang Donggeng Metalware Co., Ltd.
China Mainland Ningbo Puhe High Strength Fasteners Co., Ltd. NBPH
China Mainland OPPU (Tianjin) Industrial Parts Co., Ltd. OP
China Mainland Liaoning Shiqiang Machinery Manufacturing Co., Ltd. SQ
China Taiwan Zyh Yin Ent. Co., Ltd. ZY
China Mainland Ningbo Jinwei Group 01TD
America Screws Industries, Inc. 01JH
China Mainland Gem-Year Logistics Co., Ltd. GY
China Mainland Hangzhou Hualing Steel Structure High-tensile Bolts Co., Ltd.
China Mainland WASI Tianjin Fastener Co., Ltd. WA
China Mainland Anhui Haicheng Railway Equipment Technology Co., Ltd. ah
America Aerotech Fasteners, Inc.
China Mainland Hebei Renxian High Strength Bolt Co., Ltd. T
China Mainland Zhejiang Gemcai Metal Product Co., Ltd. GEM
China Mainland Finework(Hunan)New Energy Technology Co., Ltd. FW
America Metric & Multistandard Components Corp. MMCC
China Mainland Shanghai Hengtuo High Strength Fasteners Co., Ltd. WFX
China Mainland Ningbo Jiyuan Import and Export Co., Ltd.
America T&T Drilling, Inc. 01WW
China Taiwan Zhan Yang Machinery Industrial Co., Ltd. STAMPO
China Mainland Shanghai Guanglve Technology Development Co., Ltd. TANDL
China Mainland Jiangsu Jinsha Fastener Co., Ltd. JSJS
America Universal Precision Screws UPSL or UPSI
China Mainland Jinan Zhongcheng Metal Products Co., Ltd. S&F
China Mainland Shanghai Arvid Hardware Co., Ltd. AF
China Mainland Jiangsu Ying Yan Fastening System Technology Co., Ltd.
America Portalnd Bolt & Manufacturing Co., Inc.
China Mainland Hebei Tianchuang Pipe Co., Ltd. TCF
America Domestic Fastener & Forge, Inc. 01AK
China Mainland Shanghai Lingying System Integration Technology Co., Ltd. SHY
China Mainland Zhangjiagang Sanjiang Standard Component Co., Ltd. ZSJ
China Mainland Jiaxing Zuanbiao Fasteners Co., Ltd. 01XE
China Mainland Gem-year Industrial Co., Ltd. CYI
China Mainland Handan Feida Standard Fastener Factory FD
China Taiwan Thread Industrial Co., Ltd. ticl
China Taiwan People FasTech Enterprise P
China Mainland Nantong Ansaile Fastener Co., Ltd. ASL
China Mainland Shanghai Uchee Hardware Products Co., Ltd. L or LION
China Mainland Quanjiao Chenyang Standard Parts Manufacturing Co., Ltd. NQ
China Mainland Hebei Goodfix Hardware Manufacture Co., Ltd.
America Penn Automotive, Inc.
China Taiwan West North Machine Works, Ltd. WEST NORTH
China Mainland Shanghai Minzhi High Strength Bolt Co., Ltd. MZ
China Mainland Tianjin BOT Electric Power Equipment Co., Ltd. BOT
America Whitesell International Corporation
America Texas Coldheaders Inc. TC
China Mainland Handan Xinzhongsheng Fastener Manufacturing Co., Ltd. HDZS
China Mainland Guangzhou Shangyi Machinery Co., Ltd. GSY or YSY
China Mainland Xuzhou Ruida High Strength Fasteners Co., Ltd. RD
China Mainland Zhangjiagang JINLI Standard Fastener Co., Ltd. ZB
China Mainland Wuxi Jin Zhongyuan Machinery Co., Ltd. JZY
China Taiwan Yensen Technology Co., Ltd.
China Mainland Liaoning Xingyi Machinery Manufacturing Co., Ltd. XYJX
China Mainland Nanjing Jiangbiao Standard Component Co., Ltd. NJB or 江标
China Mainland Jinhua Zhipeng New Energy Technology Co., Ltd. WNL
China Mainland Bofeng Automotive Parts Technology Co., Ltd. BF
America Vamp Screw Products Company VP
China Mainland Hebei Wuwei Aero&power Technology Co., Ltd.
America Automotive Racing Products, Inc. L-19 or 2000 or PERMALOC or WAVE-LOC or ARP
China Taiwan Mr. Duck Tools Enterprise Co., Ltd. duck圖
China Mainland Ningbo Qingli Fasteners Co., Ltd. NQL
China Mainland Nantong Lock Fastener Manufacturing Co., Ltd.
America Elite Fasteners, Inc.
America Long-Lok Fasteners Corporation LL
China Taiwan Ben Yuan Enterprise Co., Ltd. BY
China Mainland Ningbo Luoli High Strength Fasteners Co., Ltd.
America Pilgrim Screw Corporation
China Mainland Shenyang Futian Fasteners Co., Ltd.
China Mainland Ningbo Eco Fastening Industry Co,. Ltd. 01XB
China Mainland Dalian Hengping Precision Fasteners Co., Ltd. SEA
China Mainland Zhengzhou Hanghu Electronic Technology Co., Ltd. HHD
China Mainland Shaoxing Shunxin Fastener Co., Ltd. SXS

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Note:
①China National Technical Committee for Fasteners: Identifying Marks of Verified Fastener Manufacturers, Announcement No. 10 [2021-04-08];
②U.S. Patent & Trademark Office Fastener Insignia Register Active Insignias, Jan 29, 2020;
③China National Technical Committee for Fasteners: Identifying Marks of Verified Fastener Manufacturers, Announcement No. 11 [2023-05-16];
④China National Technical Committee for Fasteners: Identifying Marks of Verified Fastener Manufacturers, Announcement No. 12-1 [2024-01-15];
⑤China National Technical Committee for Fasteners: Identifying Marks of Verified Fastener Manufacturers, Announcement No. 13-1 [2024-11-01];
⑥China National Technical Committee for Fasteners: Identifying Marks of Verified Fastener Manufacturers, Announcement No. 14 [2025-04-15];