Dear Sir How are you doing ? Please , you check your mail and send quotation to us : we want to buy spare part of gear box boiler for Model : GL-16P Item 1: --> Quantity : 2 set Item 7: --> Quantity : 2 set Item 8: --> Quantity : 2 set Item 17: --> Quantity : 2 set Item 20: --> Quantity : 2 set Thanks And Best Regards Chương