Xyoo 2004
H&H TSHIAB KHOOM PLIG tau tsim
Xyoo 2006
Pib PRODUCTION HOTMELT
ADHESIVE FILM HAUV YANGZI ROAD
Xyoo 2009
Nkag mus rau qhov chaw ntawm ELECTRONIC SHIELDING
Cov khoom siv, phab ntsa npog, thiab cov khoom siv khau
2013
Factory RELOCATION rau QIDONG
Xyoo 2014
H&H 10 XYOO TSHIAB
2016
LISTED RAU NEEQ, SUCCESSFUL SHARE REFORM
2019
YUAV TSUM TAU TXAIS NTAWM WENZHOU CHUANGHE, QUAN ZHOU WANHE,HANG ZHOU ZHIHE, DONG GUAN SHANGHE, VIETNAM HEHETHIAB LWM TUS SUBSIDIARIES
2020
ANHUI HEHE tau tsim los tsim cov automotive xim tiv thaiv zaj duab xis thiab kev lag luam daim kab xev khoom;
2021
Kev tsim kho ntawm "JIANGSU H&H POLYMER MATERIALS ENGINEERINGTECHNOLOGY CENTER" tau ua tiav tiavTXOJ CAI.
2022
R & D CENTER RELOCATED mus rau SHANGHAI HEADQUARTERS