|  |  | 
                            
                              |  | 1988 | 
                            
                              |  | Main Factory  established, named "ZhangQiu Forged Flanges Factory" in ZhangQiu City of Shandong; | 
                            
                              |  | 1990 | 
                            
                              |  | Started to produce steel flanges, steel balls and steel nuts, exported  by the national trading company; | 
                            
                              |  | 1993 | 
                            
                              |  | Got owned import-export rights, started to export flanges by ourselves; | 
                            
                              |  | 1994 | 
                            
                              |  | Specialized to produce forged steel flanges; | 
                            
                              |  | 1996 | 
                            
                              |  | Built new workshop and storage house, the using size of plant with more than 5000㎡; | 
                            
                              |  | 1997 | 
                            
                              |  | Approved to ISO9001:2000 system and built factory material test laboratory; | 
                            
                              |  | 1998 | 
                            
                              |  | Set up joint venture relation with Korean partner named "Jinan Hyupshin Flanges Co., Ltd'; | 
                            
                              |  | 1999 | 
                            
                              |  | Joint venture company approved to Korean  Industrial Standard Association, obtain "KS Certificated"; | 
                            
                              |  | 2005 | 
                            
                              |  | Approved to "Machinery Manufacturing Base" in States; | 
                            
                              |  | 2006 | 
                            
                              |  | Owned branch of Import and Export Trading Company  established; | 
                            
                              |  | Set up sales company named "Hyupshin Flanges Co., Ltd" in Incheon and Busan, Korea; | 
                            
                              |  | Started to produce elbows, reducer, pipe nipple etc, step into pipe fittings producing; | 
                            
                              |  | 2007 | 
                            
                              |  | Total exporting amount reached $6 million, total sale amount reached $8 million; | 
                            
                              |  | 2009 | 
                            
                              |  | Trading company was  merged to Jinan Hyupsin Flanges Co., Ltd; | 
                            
                              |  | 2010 | 
                            
                              |  | Pipe fittings (Elbows, Tees) business was expand to more than 5 countries and areas; | 
                            
                              |  | 2011 | 
                            
                              |  | The Third workshop was built; | 
                            
                              |  | 2014 | 
                            
                              |  | Set up new trading company named "Jinan LinkIn Trading Co., Ltd"; | 
                            
                              |  | 2016 | 
                            
                              |  | Certified by TUV Rheinland for ISO9001 : 2015; | 
                            
                              |  | 2019 | 
                            
                              |  | Certified by TUV Rheinland for CE PED 2014/68/EU and AD2000 W0 W9; | 
                            
                              |  | 2022 | 
                            
                              |  | Company name updated to "SHANDONG HYUPSHIN FLANGES CO., LTD"; | 
                            
                              |  | The fourth workshop was built; | 
                            
                              |  | 2023 | 
                            
                              |  | Certified by LRQA for UKCA PER 2016 Certificate; | 
                            
                              |  | 2024 | 
                            
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