Zhengda Food (Hengshui) Co., Ltd. 300T / H hauv av fluoride tshem tawm qhov project. Cov dej hauv av fluoride hauv Gucheng County ntawm Hengshui City tshaj tus qauv. Peb lub tuam txhab txais cov txheej txheem tshem tawm cov tshuaj fluoride tshwj xeeb kom ua tiav lub hom phiaj ntawm kev tshem tawm fluoride rau haus.
