website:https://www.jhmindustry.com/
Shanghai Jian & Mei Industry and Trade Co., Ltd. is the company which manufacture and export fasteners and metal hardware, founded in 2006, with import-export authority. Now, 80% products export to all over the world and 20% sell in domestic market.
This is one option to help you remove stripped or stuck shower handle faucet seats with incubated big flat screw driver and a hammer. Hope it helps at least one person. Good luck.