supply of 1. annual maintenance contract for stm machines. the amc period is valid for 4 years after expiry of 2years warranty period. service engineers (se) rate is inclusive of travelling /lodging /boarding/local travelling and any other incidental charges during each visit of minimum 2 days time. no extra payment will be made on this account. 2. weld trimmer power pack version for a.t. welding (no.: tm/sm/9dt. 16.08. 1991) second revision, 2022 with 2 years warranty1. annual maintenance contract for stm machines. the amc period is valid for 4 years after expiry of 2years warranty period. service engineers (se) rate is inclusive of travelling /lodging /boarding/local travelling and any other incidental charges during each visit of minimum 2 days time. no extra payment will be made on this account. 2. weld trimmer power pack version for a.t. welding (no.: tm/sm/9dt. 16.08. 1991) second revision, 2022 with 2 years warranty,annual maintenance contract for stm machines. the amc period is valid for 4 years after expiry of 2years warranty period. service engineers (se) rate is inclusive of travelling /lodging /boarding/local travelling and any other incidental charges during each visit of minimum 2 days time. no extra payment will be made on this account. , weld trimmer power pack version for a.t. welding (no.: tm/sm/9dt. 16.08. 1991) second revision, 2022 with 2 years warranty [ warranty period: 24 months after the date of delivery ]