Xyoo 2004
H&H COV NTAUB NTAWV TSHIAB TAU TSIM LOS
Xyoo 2006
PIB TXHIM KHO HOTMELT
COV YEES DUAB UAS NYOB HAUV TXOJ KEV YANGZI
Xyoo 2009
NKAG MUS RAU COV TEB CHAWS NTAWM KEV THOV HLUAV TAWG XOV TOOJ
COV KHOOM SIV, COV PHAJ PHAJ NTSEG, THIAB COV KHOOM SIV KHAU
2013
HOOBKAS TSAV TSEV MUS RAU QIDONG
2014
H&H 10 XYOO TXOG KEV UA HAUJ LWM
2016
SAIB XYUAS NTAWM NEEQ, KEV HLOOV PAUV SIB KOOM UA HAUJ LWM ZOO
2019
YUAV UA LI CAS YUAV TSUM PAUB TXOG WENZHOU CHUANGHE, QUAN ZHOU WANHE,HANG ZHOU ZHIHE, DONG GUAN SHANGHE, VIETNAM HEHETHIAB LWM YAM SUBSIDIARIES UAS LAWV MUAJ TAG NRHO
2020
ANHUI HEHE TAU TXAIS LUB TUAM TXHAB LOS TSIM COV YEES DUAB TIV THAIV XIM TSHEB THIAB COV KHOOM SIV;
2021
Kev Tsim Kho ntawm "JIANGSU H&H POLYMER MATERIALS ENGINEERING"TECHNOLOGY CENTER" TAU PAUB ZOOTXOJ KEV TXAIS YUAV.
2022
CHAW R&D CHAW NYOB RAU SHANGHAI LUB TSEV KAWM NTAWV