Supplier Annual conference 2022

Purchasing Strategy 2022 2. e-Supplier evaluation (on System) Improvement : Limitation of Supplier evaluation Program 2.1 FY2022 Activities Version Excel 1. Automatic Price Adjustment Program Improvement : The Limitation of Program Version Phase1 Interface Data to Concern Multi Program Benefit 1. This program can integrate to e-Application & SL9. Benefit 1. Reduce working time 4 to 1 day 2. Reduce working time 723 hr./Year. (Est 0.1MB/Year) (Cost saving 0.022 MB/Y) 49

Accounting Department 2.1 FY2022 Accounting Activities Activity 2022 1. Customize e-Billing Accounting Department has created additional condition in the e-billing system for support the billing for term of payment. Start project March 2022 2. e-Tax invoice / e-Receipt 50

Accounting Department 2.2 Calendar and Credit Term of Billing TSPK Group TSPK Jan-22 Feb-22 Mar-22 Apr-22 May-22 Jun-22 Jul-22 Aug-22 Sep-22 Oct-22 Nov-22 Dec-22 วันที ่ รับวางบิ ล 4-6 1-3 1-3 1,4-5 3-5 1-2,6 1,4-5 1-3 1,2-5 3-5 1-3 1-2,6 วันที ่ โอนเงิ น , รับเช็ ค 15/02/2022 15/03/2022 18/04/2022 17/05/2022 15/06/2022 15/07/2022 15/08/2022 15/09/2022 17/10/2022 15/11/2022 15/12/2022 16/01/2023 51

Supplier Annual Conference 2022 3. Purchasing Policy and CR Activity

Purchasing Policy and CR Activity 2022 Cost Reduction Policy Cost Reduction Challenge  New price structure cost  Scrap return policy Cost Reduction Program DCR Meterial Mill Part Complexity Price LTA VA/VE Negotiation Total 6% Part Price Actual Check Gap Weight MCRT NDCR Packaging Delivery Activity Activity Process Improvement Actual Check 53

Purchasing Policy and CR Activity MCRT Performance History MCRT Weight Reduce Performance MCRT Activity’2021  Total Idea : 68 Idea  Success : 68 Idea MCRT Activity’2022  Total MCRT Idea : 28 Idea  MCRT Idea Success : 23 Idea  Total Gang Die : 78 Idea  Gang Die Success : 71 Idea 54

STA PERFORMANCE Mr. Manop Kumdach Manager, Thai Summit PK Group March 04th, 2022 My Quality Declaration “Quality is the First” “คณุ ภาพตอ้ งเป็ นหนงึ ”

STA PERFORMANCE Agenda 1. Result of Supplier Evaluation Score 2021 2. VMI Performance 2021 3. Supplier Evaluation Score Policy 4. Supplier Award Policy and criteria 5. Supplier Performance Award 2021 6. Engineering information 7. CQI-15 assessment 8. PPAP MY20 56

STA PERFORMANCE 1. Result of Supplier Evaluation Score 2021 PT.98 = 4, PT.97 = 1, 40 2 1 Supplier 400% Supplier 100% 1 4 35 4 PT.100 = 16, 30 17 PT.96 Supplier 1600% 25 16 PT.97 20 PT.98 PT.99 = 17, 15 22 PT.99 Supplier 1700% 10 8 PT.100 5 57 0 Evaluation 2021 Evaluation 2020 PT.100 PT.99 PT.98 PT.97 In recent year, there are 39 suppliers who have achieved performance goals and only one has not.

STA PERFORMANCE 2.VMI Performance 2021 In the year 2021, there was a total VMI’s problem of 28 1906 case, divided into 9 types of case. 86 111 • TEMPORARY ORDER 993 Case 77 • WRONG INVOICE 117 • WRONG DS 232 Case • DS & INV WRONG Q’TY 141 Case 121 Case • DS & INV WRONG PRICE 117 Case 121 • WRONG PO 993 111 Case • DS & INV WRONG ITEM 86 Case • NO DS 141 • OTHER 77 Case 232 28 Case OTHER NO DS DS & INV WRONG ITEM Corrective action WRONG PO DS & INV WRONG PRICE DS & INV WRONG Q'TY •Set plan and team follow up to improvement and arrange an WRONG DS WRONG INVOICE TEMPORARY ORDER appointment to discuss the VMI's problems period, supplier present improvement corrective action the problem after TSPK team arrange an appointment to discuss the VMI's problems period. •TSPK expect supplier to reduce 50% of VMI problem in period from last year. 58

STA PERFORMANCE 3. Supplier Evaluation Score Policy Description 2020 2021 2022 2023 2024 Safety (Serious case) 0 Case 0 Case 0 Case 0 Case 0 Case Quality 99% 100% 100% 100% 100% Costs 90% 90% 90% 90% 90% Delivery 100% 100% 100% 100% 100% Target 98% 98% 98% 98% 98% Actual 98% 99% - - - Case lower score target of month. Time #1 : Set plan improvement in format performance verification tracking and show evident for close action plan and setting plan for visit Quality (Q), Capacity (Delivery) each have supplier problem or other problem. Time #2 : Set plan improve and top management supplier meeting action plan for close all issue problem with team relate TSPK-G and request supplier present improvement Q,D every month after TSPK team visit and team follow up. Time #3 : Top management supplier meeting with top management Purchasing Department of TSPK-G and set member each supplier visit good supplier for get idea improvement. Noted : If the score is lower target for 3 consecutive months. Supplier will not be eligible to receive RFQ. 59

STA PERFORMANCE 4. Supplier Award Policy for 2022 TSPK-G CRITERIA Excellence Award Criteria Award recipients will be determined based on an evaluation of their performance during 2022. The scoring criteria will evaluate supplier performance in specific measurable parameters (Score S,Q,C and D) from all TSPK's facilities. Safety “0“ Serious accident case (S) Quality performance (Q) Delivery performance (D) Commercial performance (C) Achieve 100% TSPK-G targets continuous 12 months. The award will be announced during January to March with the \"TSPK-G Supplier Annual Conference 2022\" Benefit • Giving the opportunity to get consideration first in business share. • Improve business relationships to Partnership and Strategic Partnership. Noted : If the score is lower target for 3 consecutive months. Supplier will not be eligible to receive RFQ. 60

STA PERFORMANCE 5. Supplier Performance Award 2021 According to the conceptual to stimulate incentives for supplier potential development. Supplier performance awards are a potential way to stimulate supplier’s motivation though not always in the intended direction. The Supplier Performance Awards program recognizes suppliers involved in performance on 4 aspects (Safety, Quality, Delivery and Commercial) whose successes made a difference in helping TSPK-G achieve the goals according to the strategic route map, increased revenue or performance results, and who have consistently exhibited a collaborative business relationship with the TSPK-G. THIS SUMMIT PK GROUP I would like to thank the partnership that got the \"Excellence Award\" 2022 which performs an excellent performance in Safety workplace, Quality, SUPPLIER EXCELLENCE AWARD Delivery and Commercial in recent year. 2022 I would like to ask you to maintain an excellent performance forever. Awarded to Mr.Manop Kumdach STA Manager MAHAJAK INDUSTRY CO.,LTD In recognition of outstanding achievement in all areas of supplier performance Quality, Delivery, Commercial relationship and Safety workplace MR. Vitedmytri Lekakul TSPK-G President 61

STA PERFORMANCE 6. Engineering information (Master Plan New Project) 26 Jan'22 26 Jan'22 REVIEW L Plant Project name KU' / Investment I n v e s t m e n2t0 2 0 2021 2022 2023 2024 Y SOP Q3 (KB) Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 (KB) 20TF AXLE 443 Oct-19 112,707 line 1 SOP O 1 / line 2 Feb'2 (RG01 AXLE) 2 20TF FRAME 443 Oct-19 1,139,617 line 1 SOP O (RG01 FRAME) / line 2 Feb'2 3 RG01 FRAME CAP UP 461 May-21 145,048 RG01 Capacity uRpGS0id1eCAaspsaycLitiyneupplSaindemAosdsiyfyLiFnineipshlaonnmDoedci'f2y1F(Sintiasthuos nSODPe)c'21(Status SOP) S/MBR CAP postpone ne 4 RG01 AXLE CAP UP 414 Dec-21 256,325 SOP RG01 AxleSAOPssy LRinGe01plAaxnlemAosdsiyfyLiAnperpill2a1n ,mAoudgif2y1A,Mp/rCilS2TD1. ,PlaAnuIngst2a1ll,MJul/yC2S2T'D(S.taPltauns IMnsatkailnl gJu) ly 22'(Status Making) TSPK 5 RJ01 AXLE 55 Nov-20 92,114 Start SOP NovS2ta0r2t0SPOrPelNimoivna2r0y203 Pmroelnimthin(Naroyv3'2m0,oDnetch'2(0N,oJva'n2'02,1D)ec'20, Jan'21) TSPK-L 2,924,204 6 P703 (FORD MY20 FRAME) 174 Feb-22 1,109,875 Status : No.1 Plan SOSPta1tuFseb: N22o.1 Plan SOP 1 Feb 22 DCV deliver tooling order 433,977 SOP SOP pSlaOnP Feb 20S2O2P plan Feb 2022 No.2 Quality Trial No.2 Quality Trial week) 248,387 DCV deliver 7 U704 2,155,000 (FORD MY20 FRAME) 64 May-22 745,701 SOP SOP plan SMOPay 20S2O2P plan MayS2ta0tu2s2: TT ,PP ProduSctatitouns a:ndTTDe,PliPvePrryoFdiuncistihon and Delivery Finish tooling order 244,420 SOP SOP plan SMOPay 20S2O2P plan MayS2ta0tu2s2: TT ,PP ProduSctatitouns a:ndTTDe,PliPvePrryoFdiuncistihon and Delivery Finish week) P703 REDBACK 22 May-22 DCV deliver 8 tooling order week) (FORD MY20 FRAME) 9 MY20 (P703,U704,P703 R) DCV 292 Aug-20 Start DCV delivery pSltaanrt3D10CVUd' reelivv.etroy 2p9la2nU3'1300U6',rReve.vt.3o t2o9321U0' U3'0,R6e,vR.4evD.e3litvoe3ry10plUan',3R6e3v.U4'DRelviv.5erDyeplilvaenr3y6p3laUn'3R6e3v.U5'De PROTOTYPE Rev.6 Delivery plan3R7e0v.U6'D( 2el0iv2e0ryDepl.afinn3is7h01U8'(12U0'2,02D0e2l1.fiDneislh. f1in8i1shUF' ra, m20e2114D3eUl. fSitnaistuhsFFrainmiseh1M43oUdeSlutaFtiunsisFhin4is8hUM' odel 10 UT FRAME 183 Feb-23 PJ PL PJ PT PLPP SOPT PP 2023SO-- TPPSKPJSKOT-LoPToolpionlalginnDgiFejeigTbrain2adl02D3ie - PKJ Tooling Die Trial and improve for PJ Lot PLPP plan Feb -TTrSiaPlKa-nLdToimoplinrogvjeigfaonr dPJDLieotTrial PJ SOP 11 UT AXLE 183 Feb-23 DCV PJ PT SOPPT PP SO-PPKJ Tooling Install - PKJ Tooling Install PL DCV SOP plan Feb 2023 - TSSPOKP-L TpoloalningFejigba2n0d 2D3ie -TTrSiaPlKa-nLdToimoplinrogvjeigfaonrdSuDpieorTtrDiaClVanadndimPpJrpoavretfor Suport DCV 12 H60A FRAME MY19,20 (LCP) 75 Aug-20 SOP SAF plan SOSPONPoSvA'2F0pPlarnelSimOiPnaNroyv3'2m0 oPnrethlim(Ninoavr'2y03, mDeocn'2th0,(NJaonv'2'210),SDtaetcu'2s0C,lJoasne'2P1li)mStatus Close Plim 13 H60A AXLE MY19,20 (LCP) 20.1 Jan-22 30,883 SOP TSPK SubmSOitPQuataTtiSoPnKfoSur bRmFIitoQcuuasttaotmioenrfonr R1F7I tMoacyu's2t1omer on 17 May'21 TSPK-BP 28 Nov-20 134,000 90 May-25 Wait confrim SOP SAF plan SOSPOAPuSgA'2F0pplaonstSpOoPneAuJagn'2'201postpone Jan'21 14 H60A Frame SAF - W60D Submit -QWuo6t0aDtioSnuRbFmI ittoQcuuosttaotimonerRTFSIPKStEEPo-N20c2R2uesvitsoemToeolrinTgSVcPoKCSsEEPt-N2a0n2R2devpisaertTcooosltinsgeVncotCstotPa2MTnKd 2p3arJtuclPyoT s(tRsFeI)nt tVoFC P2MT KS2O3PJulP2yT (RFI) F SOP 15 W60D V 2 C Dwg Release Dwg Release 62

STA PERFORMANCE 7.CQI-15 assessment  FORD and TSPK have visited and assessed the welding process base CQI-15 at the manufacturer's factory. And there have been comments for our manufacturers to improve the process before mass production. Concern items P703 Complete target No Supplier Close Pending - 1 THAI SUMMIT AUTO PRESS CO.,LTD. 30 - 2 S.P AUTOMOTIVE PRODUCT CO.,LTD 60 - 3 KLK PRODUCTS CO.,LTD. 10 15-Mar-22 4 PROTEN ALLIANCE CO.,LTD. 42 - 5 HUAMEI (THAILAND) CO.,LTD. 50 - 6 THAI YASHIRO LTD. 17 0 - 7 UNITED HONESTY MAKER CO.,LTD. 00 5-Mar-22 8 Thai Summit Roll Forming Technology Co., Ltd. 02 63

STA PERFORMANCE 8. PPAP MY20 180 • P703 168 Total part = 168 Parts 160 Total part Remain 103 Due date submit PPAP 24-25 March 2022 140 131 DBL AHV AHX = 108 Parts, Due date submit PPAP 21 February 2022 120 113 118 65 Closed PPAP 103 43 Remain Due date submit PPAP 24-25 March 2022 100 CKD = 113 Parts, Due date submit PPAP within March 2022 80 65 • U704 Total part = 131 Parts ,Due date submit PPAP within April 2022 60 • P703R 43 Total part = 118 Parts, Due date submit PPAP within May 2022 40 20 0 0 0 0 P703 CKD U704 P703R Approved Remain interim Total 64

Supplier Annual Conference 2022 Mr. Somchai Rattanamongkolkul Safety Manager, Thai Summit PK Group March 04th, 2022 My Safety Declaration “Zero accident all work process.” “อบุ ตั เิ หตตุ อ้ งเป็ นศนู ย์ ทกุ กระบวนการปฏบิ ตั งิ าน”

TSPK-G Supplier safety Practices 2022 TSPK-L TSPK-E 4 Plants TSPK TSPK-BP 66

TSPK-G Request to Supplier must do Measures to prevent the spread of COVID-19 Measures to prevent the spread of COVID-19 For suppliers contacting or operating within TSPK-G companies .... Suppliers who come to contact or work before entering the company must do the following: 1. Must be vaccinated against COVID or ATK test results. 2. Must wear a medical mask or cloth mask all the time when entering the company. 3. Must check the body temperature at the security guard every time before entering the company. 4. In case the temperature exceeds 37.5 degrees, it is not allowed to enter the company. 5. Have to wash your hands with alcohol gel at the security guard. 6. Keep a social distance of at least 1 meter. 7. Enter- Exit the company area according to the specified route. 67

Covid-19 : Situation in TSPK-G CASE 158 158 158 158 158 159 159 159 159 160 160 160 160 160 160 161167161 161 161 162 180 146 157 164 167 167 167 167 167 167 170 170 170 170 180 160 157 158 126 164 148 140 120 100 89 80 76 77 60 53 55 50 45 49 40 20 1310 130 130 120 120 120 211 210 220 220 311 310 310 310 210 2100 311 200 210 210 311 412 783 78 78 68 68 10 810 710 710 710 0 0 0 0 3 0 0 0 6 6 0 0 00 17-Jan 18-Jan 19-Jan 20-Jan 21-Jan 22-Jan 23-Jan 24-Jan 25-Jan 26-Jan 27-Jan 28-Jan 29-Jan 30-Jan 31-Jan 1-Feb 2-Feb 3-Feb 4-Feb 5-Feb 6-Feb 7-Feb 8-Feb 9-Feb 10-Feb 11-Feb 12-Feb 13-Feb 14-Feb 15-Feb 16-Feb 17-Feb 18-Feb Under treatment Home Isolation Infected ATK Proactive screening infection accummulate 68

Covid-19 : Situation in TSPK-G Number of Infected TSPK-G Type of Infected 60 16 52 20 50 2 40 18 33 30 24 6 24 23 20 7 13 1304 19 32 10 10 8 14 11 41 9 4 27 2 5 134 2 22 3 0 02 Jun Jul Aug Sep Oct Nov Dec,2021 Jan,2022 Feb,2022 1. ATK Proactive screening 2. Work place 3. Daily life TSPK TSPK- L TSPK- BP Total 2632 TSPK-G Vaccinated ATK Proactive Screening 91.0% 3000 1883 65.1% 3,500 2,674 3,293 2500 430 359 3,000 431 521 2000 873 2,500 888 1500 1522 317 2,000 1,188 1000 1,500 1,355 500 340 Needle 2 480 261 1,000 1,350 1,251 1,584 930 Needle 1 Oct,21 199 204 105 0 13 16.6% 143 9.0% 500 396 403 Jan,22 206 6 111 - 346 not vaccinated 755 644 479 108 Needle 3 Nov,21 Dec,21 Feb,22 TSPK TSPK- L TSPK- BP Total 69

More Actions on COVID -19 Prevention : in TSPK-G Establish an emergency committee prevent covid-19 Improve the screening form for outsiders from documents to QR codes plan Before After Start in mid-March 2022. 70

Safety regulations that the supplier must comply with. 1. Contact to exchange card at the security guard. 2. All PPE equipment must be worn at all times when entering the company. 3. Do not wear slippers and shorts inside the company. 4. No smoking in designated areas. 5. Do not do anything that creates sparks. 6. Do not gamble within the company. 7. Do not bring all kinds of weapons into the company. 8. Do not drink alcohol or drugs. Into the company. 9. Drive no more than 10 km./hour and park in the designated spaces only. 10. Do not bring unrelated persons into the company. 11. Do not sleep or eat in the factory. 12. Parking the car support wheels, cones and turns off the engine every time. 13. Do not take photos or video clips within the company. 14. If there is an accident make The company's property damage must notify security personnel immediately. 71

TSPK-G Request to Supplier must ware PPE Supplier Helmet Do not use To use Card Reflective clothing Safety shoes 72

TSPK-G Request to Supplier must do Safety Culture Walk way Pointing finger Take the crosswalk Do not walk Not a phone before crossing pickpockets while walking the road 73

Accident & Fire : TSPK-G Summary Accidents at work of TSPK-G in 2021 ACCIDENT AT WORK Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2021 ACCIDENT AT WORK : 2021 TSPK Serious 00000000000 0 0 10 TSPK-L Slight 00000000001 0 1 9 TSPK-E Normal 00001000100 0 2 8 TSPK-BP Fire 00000000000 0 0 7 TSPK-G Serious 00000000000 0 0 6 Slight 00000000000 0 0 5 Normal 00010000000 0 1 4 Fire 00000000000 0 0 3 Serious 00000000000 0 0 2 Slight 00000000000 0 0 1 Normal 00000000000 0 0 0 Fire 00000000000 0 0 Serious Serious 00000000000 0 0 Slight Slight 00000000000 0 0 Normal 10100001000 0 3 Normal Fire 00000000000 0 0 Fire Serious 00000000000 0 0 Slight 00000000001 0 1 Serious Normal 10111001100 0 6 Slight Fire 00000000000 0 0 Normal Fire Serious Slight Normal Fire Serious Slight Normal Fire Serious Slight Normal Fire TSPK TSPK-L TSPK-E TSPK-BP TSPK-G Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 74

Supplier Annual Conference 2022 Mr. Ratthakiat Sarageng Director, Thai Summit PK Group March 4th, 2022 My Quality Declaration “We will not Receive, Make and Deliver the Defected product” “เราจะไมร่ บั ไมท่ ำ และไมส่ ง่ ของเสยี ”

Supplier Annual Conference 2022 Agenda 1. Manufacturing Strategy 2. V5 Business plan of Factory 76

1. Manufacturing Strategy

1. Manufacturing Strategy S : Safety Must = “0” Accident : Internal and External : Incoming-Internal-Customer Q : Quality First = “0” Defected : Incoming-Internal-Customer : Reduce Cost of Poor Quality D : Delivery = 100% : Improvement Activity C : Cost Competitiveness Basis required by : 1. Raising awareness(SQDC) for employee all levels 2. Good Communication 3. Keep all Customer’s Requirements and Training to all levels EEvevreMyrtMyahtniahnanigngagmegmmeumseutnsebttneblteelsvetesvalteratlrbt yby 4. Emphasize “Work discipline” and “3S” 78

1. Manufacturing Strategy S: Safety Must = “0” Accident  KYT for every working day and shift.  Near missed and TSPK safety way.  Safety of each plant meeting once a month by safety and plant Mgr.  Safety of group meeting and sharing once a month by Safety and EVP.  Incase has an accident occurred will be immediately reporting to Top management and sharing to all BU. These activities we have implemented and request supplier to implement in activity for achieve the Safety Target 79

1. Manufacturing Strategy Customers Satisfaction Target : Quality Target (PPM) Unit : PPM 6 5 4 3 2 5 4.2 3.7 1.9 2018 2019 1.8 2021 4 2020 5.1 2 0 2017 80

1. Manufacturing Strategy Q: Quality First = “0” Defected  Strong control to enable employees to work according to established procedures.  I Do I Check activity.  Strong controlling for 4 M changed .  Quality Layer Audit activity ( Plant Mgr., Mgr., Staff & LD).  Poka-Yoke and apply to use automation system.  Strong to achieved to all customer’s requirements. These activities we have implemented and request supplier to implement in activity for achieve the Quality Target 81

1. Manufacturing Strategy Unit : % 100.00% Customers satisfaction Target : Delivery target (%) 100.0% 99.98% 99.85% 99.97% 100.00% 98.0% 2017 2018 2019 96.0% 94.0% 92.0% 90.0% 88.0% 86.0% 84.0% 82.0% 80.0% 2020 2021 82

1. Manufacturing Strategy D: Delivery = 100%  Efficient communication to suppliers.  Team meeting for 2 shift every day. (SD,PC,PL,PD,QC&MT)  Production dashboard for Mgr. monitoring by real time.  Daily production performance control >95%  Keep FG stock > 3 day for all products and models.  Install QR code system to check the correct frame before delivery. These activities we have implemented and request supplier to implement in activity for achieve the Delivery Target 83

1. Manufacturing Strategy C: Cost Competitiveness  Challenge plan for CR activity from all departments.  Labor and OH cost will control by each section and share best practice.  Group activity. - Waste walk ( 7 waste, 16 losses, 0 accident) by President 3 month. - CI walk by K J.Sakultorn EVP. 3 month a time. - QCC , Inhouse-defected reduction. - Show and share among TSPK-G and TS-G.  Automation for new project and balancing C/T for current model. These activities we have implemented and request supplier to implement in activity for achieve the Cost Target 84

1. Manufacturing Strategy KPIs Target FY2022 TSPK-G TSPK TSPK-L TSPK-BP No KPI Evaluation Method Target Score Target Score Target Score Target Score 1 Financial perspective MAFR ≤ 81.1% 8 ≤ 79.6% 8 ≤ 84.3% 8 ≤ 78.4% 8 1.1 Cost of good sold MAFR ≤ 13.1% 6 ≤ 13.2% 6 ≤ 12.0% 6 ≤ 14.6 % 6 1.2 Sale & admin cost Official Claim ≤ 1.9 PPM 6 ≤ 1.7 PPM 6 ≤ 2.8 PPM 6 ≤ 1.2 PPM 6 2 Customer perspective Official Result 100 % 6 100 % 6 100 % 6 100 % 6 2.1 Customer claim Official Result 3 4 1 4 L1 4 L1 4 2.2 Delivery rate 2.3 Customer Awards Actual Result ≤ 40 PPM 5 ≤ 40 PPM 5 ≤ 31 PPM 5 ≤ 37 PPM 5 3 Internal process Actual Result 05 05 05 05 3.1 Internal defect 3.2 Safety (Serious + Fire) Refer to Master plan 100 % 5 100 % 5 100 % 5 100 % 5 3.3 Master plan & Activity improvement Actual result vs Plan 100 % 3 100 % 3 100 % 3 100 % 3 4 Training Actual result vs Plan 100 % 2 100 % 2 100 % 2 100 % 2 4.1 Competency 4.2 Functional 85

1. Manufacturing Strategy Challenge Plan TSPK TSPK-L TSPK-BP No Item Evaluation 2022 2021 2022 2021 2022 2021 1 Cost Saving Actual Result 40 M 20 M 20 M 2 Inventory Actual Result < 7.5 D 10.6 D <7D 5.5 D <7.5 D 11.4 D 3 Award from Customer Actual Result 1 2 L1 L3 L1 L1 4 QCC Award Actual Result 1 1 1 2 1 1 3 5 Eng. Day & KS Award Actual Result 2 6 2 1 2 6 VMI Full Automation, OEE Reporting from Dashboard and E Documentation 86

2. V5 Business plan of Factory

2. V5 Business plan of Factory V5 Policy (FY2022 – 2025) : Key Target & Strategy “We are the World Class Manufacturer of Chassis Frame and Axle for Pick-up Truck” Quality Management System Financial Customer Productivit Human Engineerin Target Satisfactio y Target Capital g Strategy n Target and Target & Strategy Strategy 5S , TPM , Core activity Teamwork & Continuous Improvement Spirit 88

2. V5 Business plan of Factory V5 Policy (FY2022 – 2025) : Customer Satisfaction Target (Quality & Delivery) TSPK-G Customer Claim 2017 - 2021 (Unit ; PPM) TSPK-G Customer Satisfaction 2017 - 2021 (Unit ; %) 5.1 4.2 3.7 99.83 99.99 99.93 100 100 100 100 100 100 1.8 1.9 2 2 2 2 2017 2018 2019 2020 2021 2022 2023 2024 2025 2017 2018 2019 2020 2021 2022 2023 2024 2025 V4 V5 V4 V5 Quality Policy Delivery Policy 1. Claim limit each plant less than 2 PPM (Y 2022-2025) 1. Delivery target 100 % (On time delivery and meet customer  TSPK < 1.9 PPM ( 20 Pcs.)  TSPK-L < 1.7 PPM ( 4 Pcs.) requirement)  TSPK-BP < 1.1 PPM ( 1 Pc. ) 2. Setup delivery team to analytical & improve delivery performance 2. Internal quality defect limit (Y 2022-2025) 3. Smart factory  TSPK < 50 PPM  TSPK-L < 50 PPM  TSPK-BP < 50 PPM  MRP( Material Requirement Planning) 3. Setup quality team  QR code & Barcodes implement 100%  To build up quality personnel (Skill, Awareness, Mindset)  Realtime traceability system : Customer order & FG stock control  To achieve and maintain quality performance by systemic improvement  To be smart quality system (High accuracy & precision and Traceability) 89

2. V5 Business plan of Factory Defects Analysis FY2017-2021 ( Unit : % ) Incoming In process Customer Skip process Spot cold Dimension Metal Wchriopng pFaurtnctional MSiuspspinligerppaartrWt rong part Wrong part Torque Metal chip NG, 8.1% weld; 1.2% Spatter 2N.G5%1.2% 0.4%ass'y 0.3N%G 0.2% 00..10B%4u%rr 0.1%Ass'y Delivery Down Paint peel- Mix model 100.0% 600.0% 600.0% 200.0%ing 100.0% 100.0% Appearance Appearance, NG Supplier part Dimension 17.3% 4.3% NG 10.4% 19.7% Dimension Welding De- NG, 27.7% fects 11.7% Missing Welding De- Wrong Weld Defects Functional parts fects 21.4% Assembly, 84.8% NG 15.4% 24.3% 2200.0% Appearance Spatter NG 13.3% 2800.0% TSPK-G Supplier score target Y2021 => 99 point Actual are 98.97 point. Almost supplier not achieve the target are the same 6-7 supplier. Then we will collaboration with STA team for implement development activities with them to achieve our target in 2024. 90

Customer Satisfaction (Quality & Delivery) Delivery performance 2017-2021 (Unit ; %) Problem : Delivery TSPK 99.83 99.99 99.93 100.00 100.00 PM fail Down time Parts 2017 2018 2019 2020 2021 Forklift shortage 100 TSPK-L 100 10% Lower Stock Skip proceMssixed Part 30% 100 100 100 10% (Unit ; %) MissingPackaging check 10% Difficult check 2017 2018 2019 2020 2021 Communication 100.00 TSPK-BP 100.00 10% 2017 (Unit ; %) Wrong Planning 100% Wrong Delivery Missed communication 20S%kip 99.98 99.99 100.00 process FG stock not matching with 2018 2019 2020 2021 inventory data. 91

2. V5 Business plan of Factory V5 Policy (FY2022 – 2025) : Productivity Target & Strategy 2.3 Productivity Item 2.1 Target P 1. Productivity Up R 2. RECS (ECRS) Factory Countermeasure Target (Unit ;MB) O 3. OEE C 4. Core Activity Plant 2022 2023 2024 2025 TSPK 40 100 80 10 TSPK-L 20 90 60 10 TSPK-BP 20 65 50 10 TSPK-E 5 10 9 2 TSPK-G 85 265 199 32 2.2 Productivity Policy E 5. Energy Saving 2.2.1 Achieve operation EBIT ≥ 6% S 6. Smart Factory 2.2.2 Productivity up 7% to countermeasure increase expense S 7. Smart Engineering each year 2.2.3 New project achieve target COGS ≤ 80% 2.2.4 Smart factory by applying innovation for optimizing benefits organization 92

TSPK-G supplier Annual conference 2022. Mr. Paiwan Pimpakorn MGR. Thai Summit PK Group March 4th, 2022 My Quality Declaration “We will continuously improve process efficiency. And review the strategic objectives and goals needed to achieve the best results.” “เราจะปรับปรงุ ประสทิ ธภิ าพของกระบวนการอยา่ งตอ่ เนอื่ ง และทบทวนวตั ถปุ ระสงคเ์ ชงิ กลยทุ ธแ์ ละเป้าหมายทจ่ี ำเป็ นเพอ่ื ใหบ้ รรลผุ ลลพั ธท์ ดี่ ที สี่ ดุ ”

Production Control Agenda 1. Forecast 2. Evaluation score 3. Criteria score 4. Importance information 94

1. Forecast

Forecast Plant Project Volume 2021 Volume 2022 Up/Down % TSPK-C P375 Frame -68.9% U375 /P375 RB Frame 125,219 38,904 -60.9% Last Production on Apr'2022 TSPK-L P375 AXLE -50.3% Last Production on Jun'2022 TSPK-BP P703 Frame 60,362 23,610 100.0% Last Production on Aug'2022 U704 /P703 RB Frame 100.0% Start SOP on Feb'2022 CKD Part [Pcs] 264,392 131,471 5.8% Start SOP on Apr'2022 RT50 /20TF Frame 42.3% RT50 /20TF AXLE 0 98,131 35.3% The overall product can SU FRAME 11.1% be seen that the volume QX FRAME 0 42,030 31.6% of orders will increase SU QXLE 11.7% from last year. QX AXLE 5,966,059 6,314,850 20.9% H60A Frame 15.1% P60A Frame 291,597 414,926 45.5% AXLE MY14 / LCP 22.7% HINO 323,297 437,561 43.3% CKD South Africa 103.2% 173,537 192,868 30,348 39,943 189,118 211,235 53,952 65,218 43,724 50,338 10,517 15,297 154,051 189,015 5,736 8,217 958,147 1,947,309 96

Evaluation score TSPK-G Delivery evaluate 2021 Rank Score No. of Supplier 55 Rank “A” 100% A 98-100 0 0 Key Target’2022 B 97-85 0 1. No “C” Category 55 2. A Ranking Score up = 100% C 84-65 2.1) Issue order advance 2 day before delivery D 64 Below 2.2) Supplier confirm stock before delivery 1 day & PC follow up Total Result of Score AVERAGE. of FY2021 = 99.63% So good condition. However TSPK’s requests to all supplier consider improvements in Delivery 100% on time, which will lead to an excellent score in the upcoming 2022 assessment 97

3. Criteria score