Inquiry (采购产品): scr for spot welders we use air cooled scr with alluminum heat sinks for turning ac single ph spot welders on and off. we also use it for heat control. we are local and can show you what we use now. we are 20 minutes from you and wouod appreciate a visit our tel # 631 226 1700 and we are at 1700 north strong ave copiague long island ny 11726. we buy with heat with heat sinks. thank you myron lubow president. **** Hidden Message ***** myron lubow 11726 Company: lubowmachine E-mail: lubow@lubowmachine.com **** Hidden Message ***** lubow@lubowmachine.com