Ding Yue Precision Measurement Co.,

Part 1 of 4

(A2LA Cert. No. 3364.01) Revised 01/14/2026 Page 1 of 3 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 DING YUE PRECISION MEASUREMENT CO., LTD. 8F., No. 176, Zhongfeng Rd. Longtan Dist. Taoyuan City 325, Republic of China Taiwan Yu Cheng Chen Phone: 886912588171 E Mail: dypm54815185@gmail.com CALIBRATION Valid To: March 31, 2027 Certificate Number: 7469.01 In recognition of the successful completion of the A2LA evaluation process (including an assessment of the organization’s compliance with R205 – A2LA’s Calibration Program Requirements), accreditation is granted to this laboratory to perform the following calibrations1,4: I. Mechanical Parameter/Equipment Range CMC2 (±) Comments Balance3 1 mg to 1 g 1 mg to 20 g (1 to 200) g (5 to 600) g (50 to 6000) g (1000 to 12 000) g (500 to 30 000) g (10 to 80) kg (20 to 150) kg 0.013 mg 0.035 mg 0.14 mg 0.003 g 0.02 g 0.2 g 0.2 g 4 g 10 g OIML class E2 weights, OIML class F1 weights

Part 2 of 4

(A2LA Cert. No. 3364.01) Revised 01/14/2026 Page 2 of 3 Parameter/Equipment Range CMC2 (±) Comments Universal Testing Machine3 Compression Tension (10 to 100) kgf (50 to 500) kgf (200 to 2000) kgf (500 to 5000) kgf (2 to 20) ton (5 to 50) ton (10 to 100) ton (20 to 200) ton (0.5 to 10) kgf (for Weights) (10 to 100) kgf (100 to 1000) kgf (1 to 10) ton (2 to 20) ton 0.42 kgf 0.80 kgf 2.3 kgf 8.1 kgf 46 kgf 190 kgf 220 kgf 230 kgf 0.39 kgf 0.42 kgf 1.4 kgf 40 kgf 47 kgf Load cell, Weights II. Thermodynamics Parameter/Equipment Range CMC2 (±) Comments Temperature Control Cabinet3 (-20 to 100) ℃ (30 to 300) ℃ 1.7 ℃ 1.7 ℃ Data logger Temperature and Humidity Control Cabinet3 (-20 to 100) ℃ (20 to 95) %RH @(30 to85) ℃ (30 to 300) ℃ 1.7 ℃ 1.8 % RH 1.7 ℃ Data logger, thermos hygrometer ___________________________________________________________ 1 This laboratory offers commercial calibration service. 2 Calibration and Measurement Capability Uncertainty (CMC) is the smallest uncertainty of measurement that a laboratory can achieve within its scope of accreditation when performing more or less routine calibrations of nearly ideal measurement standards or nearly ideal measuring equipment. CMCs represent expanded uncertainties expressed at approximately the 95% level of confidence, usually using a coverage factor of k = 2. The actual measurement uncertainty of a specific calibration performed by the laboratory may be greater than the CMC due to the behavior of the customer’s device and to influences from the circumstances of the specific calibration.

Part 3 of 4

(A2LA Cert. No. 3364.01) Revised 01/14/2026 Page 3 of 3 3 Field calibration service is available for this calibration. Please note the actual measurement uncertainties achievable on a customer's site can normally be expected to be larger than the CMC found on the A2LA Scope. Allowance must be made for aspects suc h as the environment at the place of calibration and for other possible adverse effects such as those caused by transportation of the calibration equipment. The usual allowance for the actual uncertainty introduced by the item being calibrated, (e.g., resolution) must also be considered and this, on its own, could result in the actual measurement uncertainty achievable on a customer’s site being larger than the CMC. 4 This scope meets A2LA’s P112 Flexible Scope Policy.