Zhejiang Benyu Tools Co., Ltd. (igoa muamua Zhejiang Zhongtai Tools), na faavaeina i le 1993, o se gaosiga o meafaigaluega eletise i Saina.E ala i le 30 tausaga o le galue malosi ma le faʻaauauina o mea fou, na faʻavaeina ai e le kamupani le faʻaogaina lelei o le R & D, gaosiga, maketi ma le maeʻa ona faʻatau atu auaunaga.