THE UTILITY of TMC  RECOMMENDED MAINTENANCE  AND ENGINEERING PRACTICES

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THE UTILITY of TMC RECOMMENDED MAINTENANCE AND ENGINEERING PRACTICES

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1. THE UTILITY of TMC RECOMMENDED MAINTENANCE AND ENGINEERING PRACTICES TECHNICAL SESSION #1 February 9, 2011

2. Attention Please In accordance with TMC Board Policy, all portable phones and pagers without a silent feature must be turned off during business sessions. If you must use your phone — please leave the room!

3. Attention Please This is an open meeting of the Technology & Maintenance Council. Audio or video recordings are not permitted at this session. However, photography is permissible. The opinions expressed in this meeting are those of the individual and not necessarily the opinion of his/her company nor of TMC unless stated otherwise.

4. Constructive Comments Are Always Appreciated! TMC welcomes your comments, but please make certain that they are constructive and appropriate before you turn in your evaluation sheet! Thank You for Your Cooperation!

5. Senior Manager of New Product Development, Ryder Responsible for vehicle research and development, vehicle specifications, new vehicle quality Offers technical assistance to the sales staff regarding vehicle specifications Graduated from Georgia Tech with a Bachelors Degree in Mechanical Engineering He has been a TMC member for 29 years and is currently TMC General Chairman and Treasurer Past Chairman of ATA’s Technical Advisory Group He has been a member of the Society of Automotive Engineers (SAE) since 1978 Jerry Thrift

6. Maintenance Specialist Power Vehicles, Air Products & Chemicals Inc 45 Years in Vehicle Maintenance (33 Years with Air Products) Worked part time as an Engine Tuner on the NASCAR Circuit, 18 years Graduated Spring Garden Institute 1967 Certified ATA National Committee Motor Fleet Supervisor Professional Affiliations Past President Lehigh Valley Fleet Maintenance Association Member of the Technical advisory board for Lehigh Career & Technical School (The largest technical school in United States) Member of Society of Automotive Engineers 22 years Active in TMC for 18 years Past Task Force chairmen of S-3 (Engines) Pass Chairmen of Technical Advisory Group of ATA Engineering Technical Advisor for the Skills USA National Committee Coordinator for district 11 PA Skills USA Competition Honors Recipient of 2009 CCJ Career Leadership Award TMC (Peggy Fisher) Study Group Leadership award 2010 Recipient of the Sliver Spark Plug award Ronald Szapacs

7. VP of Maintenance, P.A.M. Transportation Services, Inc 30 years experience in transportation maintenance 15 in the commercial leasing business 15 with a for hire truckload carrier He served 3½ years in the U.S. Army on a Mobile Maintenance Contact Team in South East Asia After completing an Electronics degree he went to work as a truck technician because electronics jobs were scarce Credentials ASE Certified Master Heavy Duty Truck Technician North American Transportation Management Institute (NATMI) “Certified Director of Maintenance/Equipment” American Trucking Association’s (ATA) Technology and Maintenance Council (TMC) “Silver Spark Plug” recipient Serves on the ATA’s Technical Advisory Group “TAG Committee” Carl P. Tapp, CDM/E

8. Jerry Thrift Manager New Product Development Ryder

9. Ryder Fleet 170,000 vehicles 4,500 technicians 800 shop locations Operations in Canada, US and Mexico

10. The RP and Spec Initiative

11. Recommended Practices Revisited RPs come in two forms: Recommended Maintenance Practices (RMP) Recommended Engineering Practices (REP) RMPs are developed to improve the maintenance of vehicles already on the ground REPs are developed to help designers and engineers improve the maintenance of vehicles to-be-built Both types can be used to spec new vehicles

12. RPs and New Vehicle Specifications RMPs and REPs can be used to supplement a fleet’s new vehicle specifications Such practice is concise while also offering greater specification detail Takes advantage of TMC’s extensive knowledge-base to improve your specs

13. Which RPs Improve New Vehicle Specifications? Since all RPs are not applicable to new vehicle specifications, each Study Group Chairman was asked to review their respective RPs and identify those RPs that are applicable to new vehicle specifications

14. RPs That Improve the New Vehicle Specification Process S.1 Electrical & Instruments RPs 105C, 114B, 125A, 127B, 129A, 137C, 141, 145, 146, 147, 152, 153, 154, 159, 160 and 163 RP 105C Battery Cable Assemblies RP 114B Wiring Harness Protection

15. RPs That Improve the New Vehicle Specification Process S.2 Tire & Wheel RPs 205B and 214C RP 205B Tire Bead Lubricants RP 214C Tire/Wheel End Balance and Run-Out

16. RPs That Improve the New Vehicle Specification Process S.3 Engines RPs 311A, 316A, 317A, 321, 327, 330, 332B, 334A, 338A, 340, 348, 349, 354, 355, 356 and 357 RP 317 Fuel/Water Separating Devices RP 332B Guidelines for Hoses, Clamps

17. RPs That Improve the New Vehicle Specification Process S.4 Cab and Controls RPs 404B, 406B, 407, 408, 414A, 417, 420A 422 and 423 RP 408 Heater and/or AC Blower Motor Accessibility RP 423 Color Coding of Air Brake Systems

18. RPs That Improve the New Vehicle Specification Process S.5 Fleet Maintenance Management None applicable

19. RPs That Improve the New Vehicle Specification Process S.6 Chassis & Brake Systems RPs 602B, 603C, 604B, 608A, 610A, 612B, 614, 615, 616, 621, 624A, 632, 635, 636, 637, 639, 640A, 650, 654, 659, 660 and 661 RP 602B Recovery Attachment Points RP 612B Pneumatic Brake Balance

20. RPs That Improve the New Vehicle Specification Process S.7 Trailer, Bodies and Material Handling RPs 711, 723A, 727, 729, 738 and 741 RP 727 Liftgate Specifications and Installation RP 729 Trailer Fastener Specifications

21. RPs That Improve the New Vehicle Specification Process S.11 Energy Conservation RPs 1107 and 1112 RP 1107 Specifying Drivetrains RP 1112 Lightweight Components Effect Fuel Economy

22. RPs That Improve the New Vehicle Specification Process S.12 On-Board Vehicle Electronics RPs 1201, 1202B, 1206 and 1207 RP 1201 Joint TMC/SAE RP for Serial Data Communication… RP 1202B Off-Board Diagnostics Standards

23. RPs That Improve the New Vehicle Specification Process S.14 Light and Medium-Duty Trucks RPs 1402, 1409, 1411, 1412 and 1413 RP 1402 Tire Selection for Commercial Light Tires RP 1409 Light and Medium Duty Automatic Operation, Design and Specifications

24. RPs That Improve the New Vehicle Specification Process S.15 Specialty Vehicles RPs 1502, 1504 and 1505 RP 1502 Spec’ing Guidelines for Hydraulic System …. RP1505 Torque Rod Selection and Installation ….

25. To Summarize: All RPs that improve the new vehicle specification process have been identified and will be consolidated into one place A fleet can review these RPs to determine which are applicable to their fleet

26. Jerry Thrift Phone: 305.500.4629 email: [email protected]

27. Ronald Szapacs Maintenance Specialist Power Vehicles Air Products & Chemicals Inc.

28. Air Product’s Fleet 3,000 Vehicles in Fleet 600 Class 8 Tractors 800 Class 4, 5, 6,and 7’s 1,800 Trailers 65 Million Miles Annually 38 Shop Locations

29. Why List Recommend Practices Reduce the length of specification Spells out all details to conform to FMVSS, DOT and FMCSR regulations List detailed drawings showing various requirements

30. Why List Recommend Practices List Performance Requirements Cab Heater & Defroster RP 407 Cab Insulation RP 422A Windshield Wiper Systems RP 406B

31. Why List Recommend Practices RP 404B Truck Ingress and Egress Standards RP 417 Supporting Air and Electrical Lines Between Tractor & Trailer RP 603 C Fifth Wheel Mounting

32. Reducing the Length of Spec Cranking circuit to be full copper wire, circuit to be complete from battery to cranking motor to conform with TMC (RP105C)

36. RP 349 ECM Harness & Connectors References 9 SAE Standards

37. Who Develops RP’s Engineers from Many Product Suppliers Sales People End Users ( Fleets)

38. Joint Committee RP’s Many TMC RP’s were written by joint committees Engine Manufactures Association Truck Trailer Manufacturer Association Society of Automotive Engineers

39. Thank You For Your Time and Attention

40. Carl P. Tapp, CDM/E VP of Maintenance P.A.M. Transportation Services

41. The P.A.M. Fleet 1,750 Over-the-Road Tractors 100 Day Cab Tractors 27 CNG Tractors 40 Yard Jockeys 4,500 Trailers – Dry, Drop Frame, Reefer 2 Over-the-Road Transfer Wreckers 10 Maintenance Shops and 1 Body Shop 200 Million Miles Annually A LITTLE ABOUT PAM… WE OPERATE 1750 OVER THE ROAD TRACTORS, 100 REGIONAL DAY CABS, 27 COMPRESSED NATURAL GAS TRACTORS, 40 YARD JOCKEYS, 4500 TRAILERS – PREDOMINANTLY DRY VAN WITH AUTOMOTIVE DROP FRAME VANS AND 50 REEFERS AND TWO OTR TRANSFER WRECKERS OUT OF 10 MAINTENANCE SHOPS AND A FULL SCALE BODY SHOPA LITTLE ABOUT PAM… WE OPERATE 1750 OVER THE ROAD TRACTORS, 100 REGIONAL DAY CABS, 27 COMPRESSED NATURAL GAS TRACTORS, 40 YARD JOCKEYS, 4500 TRAILERS – PREDOMINANTLY DRY VAN WITH AUTOMOTIVE DROP FRAME VANS AND 50 REEFERS AND TWO OTR TRANSFER WRECKERS OUT OF 10 MAINTENANCE SHOPS AND A FULL SCALE BODY SHOP

42. Our Typical Truck and Trailer A LOT IS GOING ON HERE… ELECTRICALLY! TO MAKE IT ALL WORK YOU HAVE TO BE INVOLVED WITH THE RIGHT SPECIFICATIONS WHAT A BETTER RESOURCE THAN THE TMC RECOMMENDED PRACTICES?A LOT IS GOING ON HERE… ELECTRICALLY! TO MAKE IT ALL WORK YOU HAVE TO BE INVOLVED WITH THE RIGHT SPECIFICATIONS WHAT A BETTER RESOURCE THAN THE TMC RECOMMENDED PRACTICES?

43. What Electrical RP’s Are There? THERE ARE A MULTITUDE OF BOTH S.1 ENGINEERING AND MAINTENANCE RECOMMENDED PRACTICES AVAILABLETHERE ARE A MULTITUDE OF BOTH S.1 ENGINEERING AND MAINTENANCE RECOMMENDED PRACTICES AVAILABLE

44. Recommended Engineering Practices There are 40! Which are important to me? RP 105C Battery Cable Assemblies RP 114B Wire Harness Protection RP 127B Fleet Service Light Bulb Specifications RP 137C Antilock Electrical Supply from Tractors Through the SAE J560… RP 147 SAE J560 Plug and Receptacle Wire-to-Terminal Interface… RP 153 Lamp-to-Connector Interface RP 154 Guidelines for Wire Harness, Routing, Clamping, and Protection RP 163 Power Inverter Selection OF THE 40 ENGINEERING RPs THERE ARE AT LEAST 8 THAT COULD OR SHOULD BE INCORPORATED INTO A VEHICLE ORDER SPECIFICATION. THESE 8 ARE MOST IMPORTANT TO ME THESE TWO IN PARTICULAR - ERP 105C – PROPER SELECTION MAY ELIMINATE OR AT LEAST REDUCE LOW VOLTAGE PROBLEMS IN YOUR PRIMARY ELECTRIC CIRCUIT ERP 154 - IS A GOOD START TO ELIMINATE/REDUCE THERMAL EVENTS OF THE 40 ENGINEERING RPs THERE ARE AT LEAST 8 THAT COULD OR SHOULD BE INCORPORATED INTO A VEHICLE ORDER SPECIFICATION. THESE 8 ARE MOST IMPORTANT TO ME THESE TWO IN PARTICULAR - ERP 105C – PROPER SELECTION MAY ELIMINATE OR AT LEAST REDUCE LOW VOLTAGE PROBLEMS IN YOUR PRIMARY ELECTRIC CIRCUIT ERP 154 - IS A GOOD START TO ELIMINATE/REDUCE THERMAL EVENTS

45. Recommended Maintenance Practices RP 129A – Heavy Duty Vehicle Cranking And Charging Troubleshooting: 12-Volt Systems THERE’S ONLY ONE RECOMMENDED MAINTENANCE PRACTICE THAT APPLIES TO SPEC’ING A POWER UNIT AND… OF ALL THE S.1 RPs I THINK IT IS THE MOST USED! ALL FLEETS SHOULD BECOME CONVERSANT WITH RP 129A FOR SPEC’ING, PREVENTIVE MAINTENANCE, AND ROAD SERVICE REPAIRS THERE’S ONLY ONE RECOMMENDED MAINTENANCE PRACTICE THAT APPLIES TO SPEC’ING A POWER UNIT AND… OF ALL THE S.1 RPs I THINK IT IS THE MOST USED! ALL FLEETS SHOULD BECOME CONVERSANT WITH RP 129A FOR SPEC’ING, PREVENTIVE MAINTENANCE, AND ROAD SERVICE REPAIRS

46. Battery Box Location BOTH JERRY AND RON MENTIONED ERP 105C – BATTERY CABLE ASSEMBLIES THIS IS A CRITICAL START FOR A PRIMARY ELECTRICAL SYSTEM REAL ESTATE ON A TRUCK IS AT A PREMIUM TODAY… WHO KNOWS, ONE DAY WE MIGHT END UP WITH ROOF MOUNT BATTERIES! BOTH JERRY AND RON MENTIONED ERP 105C – BATTERY CABLE ASSEMBLIES THIS IS A CRITICAL START FOR A PRIMARY ELECTRICAL SYSTEM REAL ESTATE ON A TRUCK IS AT A PREMIUM TODAY… WHO KNOWS, ONE DAY WE MIGHT END UP WITH ROOF MOUNT BATTERIES!

47. Possible Battery Box Locations LOOK AT ALL THE POSSIBLE BATTERY BOX LOCATIONS. HOW MANY OF YOU HAVE BURNED UP AN ELECTRIC WEED EATER OR HEDGE TRIMMER BY USING TOO SMALL OF AN EXTENSTION CORD THAT WAS TOO LONG? DON’T ANSWER… JUST ABOUT EVERYONE HAS. OHMS LAW DOESN’T CHANGE WHEN YOU MOVE THE BATTERIES! YOU NEED LARGER OR MORE CABLEING… THE FURTHER YOU MOVE FROM THE STARTER. DON’T FORGET THAT FRONT AXLE WEIGHT DISTRIBUTION, THE ADDITIONAL WEIGHT OF AGM BATTERIES, AND ELECTRIC IDLE REDUCTION SYSTEMS ALL FACTOR IN TO THIS AS WELL.LOOK AT ALL THE POSSIBLE BATTERY BOX LOCATIONS. HOW MANY OF YOU HAVE BURNED UP AN ELECTRIC WEED EATER OR HEDGE TRIMMER BY USING TOO SMALL OF AN EXTENSTION CORD THAT WAS TOO LONG? DON’T ANSWER… JUST ABOUT EVERYONE HAS. OHMS LAW DOESN’T CHANGE WHEN YOU MOVE THE BATTERIES! YOU NEED LARGER OR MORE CABLEING… THE FURTHER YOU MOVE FROM THE STARTER. DON’T FORGET THAT FRONT AXLE WEIGHT DISTRIBUTION, THE ADDITIONAL WEIGHT OF AGM BATTERIES, AND ELECTRIC IDLE REDUCTION SYSTEMS ALL FACTOR IN TO THIS AS WELL.

48. Cabling UNDERSTAND WHAT KIND OF CABLE ARRANGEMENT WILL BE USED. COMPLIANCE CAN BE USUALLY BE VISUALLY VERIFIED!UNDERSTAND WHAT KIND OF CABLE ARRANGEMENT WILL BE USED. COMPLIANCE CAN BE USUALLY BE VISUALLY VERIFIED!

49. Low System Voltage I BORROWED THE NEXT TWO SLIDES FROM AN S.1 “LOW VOLTAGE” PRESENTATION IN CINNCINATTI THIS ONE ILLUSTRATES VOLTAGE DROP BY CABLE LENGTH FOR VARIOUS CABLE SIZES. THE HORIZONTAL BARS ARE THE RP 129A “NEW” AND “USED” VEHICLE PARAMETERS.I BORROWED THE NEXT TWO SLIDES FROM AN S.1 “LOW VOLTAGE” PRESENTATION IN CINNCINATTI THIS ONE ILLUSTRATES VOLTAGE DROP BY CABLE LENGTH FOR VARIOUS CABLE SIZES. THE HORIZONTAL BARS ARE THE RP 129A “NEW” AND “USED” VEHICLE PARAMETERS.

50. Low System Voltage THIS ONE SHOWS THE REDUCTION IN CRANKING RPM AS RELATED TO CABLE LENGTH AGAIN… USING VARIOUS CABLE SIZES PROPER CRANKING SPEEDS ARE CRITICAL SINCE THE ADVENT OF EPA 2007 ENGINES THIS ONE SHOWS THE REDUCTION IN CRANKING RPM AS RELATED TO CABLE LENGTH AGAIN… USING VARIOUS CABLE SIZES PROPER CRANKING SPEEDS ARE CRITICAL SINCE THE ADVENT OF EPA 2007 ENGINES

51. Cabling Around The Engine CABLING AROUND THE ENGINE… FROM ALTERNATOR TO STARTER AND THEN TO THE BATTERIES IS EVOLVING AS WELL THIS IS A EPA 2007 ENGINE CABLING ARRANGEMENTCABLING AROUND THE ENGINE… FROM ALTERNATOR TO STARTER AND THEN TO THE BATTERIES IS EVOLVING AS WELL THIS IS A EPA 2007 ENGINE CABLING ARRANGEMENT

52. Wiring For An EPA 2010 Engine HERE’S THE SAME OE’S WIRING FOR AN EPA 2010 ENGINE, LOOKS CLEANER AND… A BIG IMPROVEMENTHERE’S THE SAME OE’S WIRING FOR AN EPA 2010 ENGINE, LOOKS CLEANER AND… A BIG IMPROVEMENT

53. Single Most Important Spec HERE IS THE SINGLE MOST IMPORTANT SPEC TO WRITE IN… MUST PASS TMC RP 129A IF THEY DID EVERYTHING ELSE RIGHT… IT SHOULDN’T BE AN ISSUE PASSING RP 129A IS SIMPLY A SEQUENTIAL PROCEDURE FOR EVALUATING OR TROUBLESHOOTING YOUR PRIMARY ELECTRICAL SYSTEM I.E. CHARGING AND CRANKING CIRCUITS. IT’S 11 PAGES LONG AND I WON’T BORE YOU WITH THE DETAILS… GET FAMILIAR WITH IT WHEN YOU GET HOME!HERE IS THE SINGLE MOST IMPORTANT SPEC TO WRITE IN… MUST PASS TMC RP 129A IF THEY DID EVERYTHING ELSE RIGHT… IT SHOULDN’T BE AN ISSUE PASSING RP 129A IS SIMPLY A SEQUENTIAL PROCEDURE FOR EVALUATING OR TROUBLESHOOTING YOUR PRIMARY ELECTRICAL SYSTEM I.E. CHARGING AND CRANKING CIRCUITS. IT’S 11 PAGES LONG AND I WON’T BORE YOU WITH THE DETAILS… GET FAMILIAR WITH IT WHEN YOU GET HOME!

54. RP 129A Compliant? HERE’S SOME ENGINEERING DIAGRAMS FROM AN OEM WORKING TO COMPLY WITH RP 129A SAME CABLE LENGTHS AND DIFFERENT CONFIGURATIONS, ONE WORKS AND ONE DOESN’T I WON’T GO INTO DETAIL BUT PRAISE THEM FOR THEIR EFFORTS! HERE’S SOME ENGINEERING DIAGRAMS FROM AN OEM WORKING TO COMPLY WITH RP 129A SAME CABLE LENGTHS AND DIFFERENT CONFIGURATIONS, ONE WORKS AND ONE DOESN’T I WON’T GO INTO DETAIL BUT PRAISE THEM FOR THEIR EFFORTS!

55. Frame Grounds LEFT PICTURE IS A WELD-IN GROUND STUD WHICH COULD CAUSE A VOLTAGE DROP ISSUE RIGHT PICTURE IS A THRU-FRAME BOLTED GROUND STUD ON A RETURN GROUND SPECLEFT PICTURE IS A WELD-IN GROUND STUD WHICH COULD CAUSE A VOLTAGE DROP ISSUE RIGHT PICTURE IS A THRU-FRAME BOLTED GROUND STUD ON A RETURN GROUND SPEC

56. Over Populated Terminals THESE COULD BE POTENTIAL VOLTAGE DROP ISSUESTHESE COULD BE POTENTIAL VOLTAGE DROP ISSUES

57. Tools to Verify RP 129 RMP 129 IS THE EASIEST TO VERIFY AND IT CHECKS THAT REP 105C WAS FOLLOWED AND MORE. IT TESTS YOUR BATTERIES, ALTERNATOR, AND STARTING CONTROL CIRCUTS AS WELL. YOU DON’T NEED MUCH IN THE WAY OF TOOLS TO VERIFY AND CAN EASILY CARRY THEM TO A PILOT INSPECTION OR DEALERSHIP.RMP 129 IS THE EASIEST TO VERIFY AND IT CHECKS THAT REP 105C WAS FOLLOWED AND MORE. IT TESTS YOUR BATTERIES, ALTERNATOR, AND STARTING CONTROL CIRCUTS AS WELL. YOU DON’T NEED MUCH IN THE WAY OF TOOLS TO VERIFY AND CAN EASILY CARRY THEM TO A PILOT INSPECTION OR DEALERSHIP.

58. Verifiable RP 129 IS THE EASIEST RP TO VERIFY AND SURELY THE MOST IMPORTANT ONE FOR A FLEET IN MY MIND! EITHER THE FLEET CAN DO IT OR HAVE THE OEM DO IT DURING A PILOT REVIEW. I GO A STEP FURTHER AND HAVE THE DELIVERING DEALER DELIVER A PASSING PRINTOUT WITH EACH TRUCK. SOME OF THE ENGINEERING RPs WOULD BE HARD OR NEXT TO IMPOSSIBLE TO VERIFY (RP 125A – BATTERY VIBRATION OR RP 152 – PERFORMANCE OF INTERIOR LIGHTING COME TO MIND) BUT IF WRITTEN IN THE SPEC THE FLEET COULD REQUEST THE OE TO DETAIL HOW THEY COMPLIED. IF AN RP IS WRITTEN INTO IN A SPEC AND THE FLEET FINDS OUT AT A LATER DATE THE EQUIPMENT DOESN’T MEET THE SPEC THEY WOULD AT LEAST HAVE GROUNDS TO START A RESOLUTION DISCUSSION.RP 129 IS THE EASIEST RP TO VERIFY AND SURELY THE MOST IMPORTANT ONE FOR A FLEET IN MY MIND! EITHER THE FLEET CAN DO IT OR HAVE THE OEM DO IT DURING A PILOT REVIEW. I GO A STEP FURTHER AND HAVE THE DELIVERING DEALER DELIVER A PASSING PRINTOUT WITH EACH TRUCK. SOME OF THE ENGINEERING RPs WOULD BE HARD OR NEXT TO IMPOSSIBLE TO VERIFY (RP 125A – BATTERY VIBRATION OR RP 152 – PERFORMANCE OF INTERIOR LIGHTING COME TO MIND) BUT IF WRITTEN IN THE SPEC THE FLEET COULD REQUEST THE OE TO DETAIL HOW THEY COMPLIED. IF AN RP IS WRITTEN INTO IN A SPEC AND THE FLEET FINDS OUT AT A LATER DATE THE EQUIPMENT DOESN’T MEET THE SPEC THEY WOULD AT LEAST HAVE GROUNDS TO START A RESOLUTION DISCUSSION.

59. Using RPs to Write Your Spec’ Can Reduce Your Service Expense! USING RPs TO WRITE YOUR SPECs SHOULD REDUCE YOUR SERVICE EXPENSE AFTER THE SALE! HOPEFULLY, YOU’LL NEED “LITTLE TATER’S DISEAL SVC” FROM POSSUM HOLLER... LESS. USING RPs TO WRITE YOUR SPECs SHOULD REDUCE YOUR SERVICE EXPENSE AFTER THE SALE! HOPEFULLY, YOU’LL NEED “LITTLE TATER’S DISEAL SVC” FROM POSSUM HOLLER... LESS.

60. Thank You For Your Time and Attention Carl Tapp (479) 361- 5251 [email protected] THANK YOU FOR YOUR ATTENTION!THANK YOU FOR YOUR ATTENTION!

61. Questions and Answers

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