ZHEJIANG TOSVAL INDUSTRY CO., LTD i hoʻokumu ʻia i ka makahiki 1980 i ka hoʻomaka ʻana o ka hanauna mua me ka inoa ʻo Yuhuan Tongxing Valve Co., Ltd, ʻo kā mākou huahana mua loa he mau kaukani kikoʻī i ʻoi aku ma mua o 20 moʻo e pili ana me ka pahu keleawe keleawe, nā kiwikā wai mika , Ke kinipōpō kinipōpō a me ka kiwikā o ka huina, nā bibcock a me nā pono paipu, a me nā mea ʻē aʻe.
ZHEJIANG TOSVAL INDUSTRY CO., LTD i hoʻokumu ʻia i ka makahiki 1980 i ka hoʻomaka ʻana o ka hanauna mua me ka inoa ʻo Yuhuan Tongxing Valve Co., Ltd, ʻo kā mākou huahana mua loa he mau kaukani kikoʻī i ʻoi aku ma mua o 20 moʻo e pili ana me ka pahu keleawe keleawe, nā kiwikā wai mika , Ke kinipōpō kinipōpō a me ka kiwikā o ka huina, nā bibcock a me nā pono paipu, a me nā mea ʻē aʻe.