PRODUCT SPECIAL FEATURES < < < Wave Spring Advantage Equal Deflection and Load IT HAS OBTAINED MORE THAN 30 PATENT CERTIFICATES Wave spring is a precision flat wire compression spring suitable for installation in parts where other springs cannot meet and space is limited. 50% less space than normal round wire springs. This is to certify that the Quality Management System of Zhejiang Lisheng Spring Co., Ltd. UnlfM Soda! Credit Cod*: 913303826912SK5XG Operation Addm»: Taog'aojt. V.iUgc. Unki T<m«, Uqmg City, Zbejiaag Province. R*fi*Mrrd Addr***: Twg'royo VOUge. Umhi Town. Lcqmg City. Zhejiang Province. Production of waveform springs and elastic retaining rings for ultrasound su equipment, blood purification equipment and medical imaging equipment has been assessed and registered by NQA against the provisions of Ths t$to certrfy that the Quality Management System of Zhejiang Usheng Spring Co., Ltd. Taog'aoyu Virago. Urthi Town. Yuequvg City. Zhej-ang Province. 325600. Peopiet Ropo Chvu Manufacture of wave springs and retaining rings for aerospace industry, has been assessed and regained by NQA agamit mo provisions of AS9100O in accordance with the requirements of EN 9104-001:2013. This registration rs sut-ec! to I company m*mt*.rwvg a quality management syitem. to tfte above standard, wlsch will be moneyed by NQA This is to certify that the Quality Management System of: Zhejiang Lisheng Spring Co., Ltd. No. 14. Hi-Tech Industrial Par*. Lingang Economic Development Zone. Yueqmg Bey. Yuoqing City. Zhejgmg Prowvco. China (IATF USI YXSN2K) Design and manufacturing of wave springs, manufacturing of elastic retaining rings has boon assessed and regritered by NO A. Warwick House. Houghton Hall Park. Houghton Reg*. Dunsiabte. LU5 5ZX, UK against tho provisions of This registration <s subject to the company maintaining a quality management system the abovo standard, which w* be monilorod by NQA Managng Oroctor CerbfteateNo ISO Approval Date ASCS Approval 0M0 Issue Date Expiry Date EACCode SlO Structure Managing Director NQA Certificate No T20944 5 IATF Certificate No 0575475 First ISSUO Oate 11 June 2025 China National Accreditation Service for Conformity Assessment LABORATORY ACCREDITATION CERTIFICATE Test Center of Zhejiang Lispring Co., Ltd. {Lege/ Entity: Zhejiang Lispring Co., Ltd.) is accredited in accordance with ISO/IEC 17025: 2017 General Requirements for the Competence of Testing and Calibration Laboratories(CNAS-CL01 Accreditation Criteria for the Competence of Testing and Calibration Laboratories) for tho competence to undertake tho sorvico described in tho schedulo attached to this certificate. The scopo of accreditation is detailed in tho attached schedule bearing the same registration number as above. The schedule forms an integral part of this certificate. Effective Date: 2026-06-16 Expiry Oato. 2032-06-15 Coil Spring Wave Spring Spiral Retaining Ring Advantage ENVIRONMENT MANAGEME SYSTEM CERTIFICATE This is to certify that Unified Noetic fnJ.U .sic 9H»U3^i:SS?5XG Zhejiang Lisheng Spring Co., Ltd. No. 11. High-tech Industrial Park. Yucqing Bay Port Economic Devclopmcn City. Wenzhou City. Zhejiang Province. P K China has implemented an environment management system tor comph this standard: GB/T 24001-2016/ISO 14001:2015 - Environmental ma Requirements mill guidance for use" The environment management system tor the following scope: Manufacturing of wave springs and clastic retaining rings management activities. rWMUAiikt«iaftvwhd> rfVuitA* «d'W, »<**»} NO 1& .Ki>W<J« RD. OHra Boc^. Ova OCCUPATIONAL HEALTH AND SAFETY MANAGEMENT SYSTEM CERTIFICATE Registration Number 0482024S0I38RIM This is to certify that I.WM Socul CmJti CoOrVI )K»U>*in*»XG Zhejiang Lisheng Spring Co., Lid. Registered AddrctttTang'aovu Village. Liuvhi Town. Yucqing City. Zhejiang Province Productionlluviness Addrc»:No.l4. High-tech Industrial Part. Yucqing Bay Lingang Economic Development /one. Yucqing City. Zhejiang Province has rmptomontod an occupabonal hoahh & safety managomont system lor compliance with this standard: Tho occupational hoalth & safoty management system lor the foOowing scope Manufacturing of wave springs and elastic retaining rings and related management activities. Validate: 2024-04-24— 2027-05-25 Issued date: 2025-05-22 < Reissued<Uie) QUALITY MANAGEMENT SYSTEM CERTIFICATE Regigrabon Number 0482025Q02%R0M Th«s is to cerbly that l Kifiel Vxul Otd* Code «l MOMMI&WXO Zhejiang Lisheng Spring Co., Ltd. Registered Addfe»:T.mg'aoyu Village. liuvhi Town. Yucqing City. Zhejiang i'roduciionilusincss Addrc*s:No. 14. High-tech Industrial Pari. Yucqing Bay Li Kconomic Development Zone. Yucqing City. Zhejiang Province has implemented a quality management system for compliance with this The quaf-ty management system for tho following scope: Manufacturing of wave springs and clastic retaining rings and rcl management activities. Valid date: 2025-05-22 — 2028-05-21 Issued date 2025-05-22 to covy* iv KC'ednar.o- icn»-v» V* cot »onr4y i *e*+*tr. Uiiutf Unoiraet, nJ /7t intvmtion nr/ oh/mJ. f2r rtyturrmtn/.' Spiral retaining ring is an earless elastic stop ring formed by flat wire winding, no lug, no burr, will not interfere with the parts, and different from the traditional stamping process, will not produce waste caused by waste.