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美国进口关税
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亚膦酸盐（亚磷酸盐）和膦酸盐（膦酸盐）
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Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: · Phosphinates (hypophosphites) and phosphonates (phosphites)
单钠或二钠
Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: · Phosphates: · Of mono- or disodium
钾制
Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: · Phosphates: · Of potassium
磷酸氢钙（“磷酸二钙”）
Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: · Phosphates: · Calcium hydrogenorthophosphate ("Dicalcium phosphate")
其他磷酸钙
Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: · Phosphates: · Other phosphates of calcium
Phosphates: — 其他：
Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: · Phosphates: · Other:
三磷酸钠（三聚磷酸钠）
Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: · Polyphosphates: · Sodium triphosphate (Sodium tripolyphosphate)
Polyphosphates: — 其他：
Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: · Polyphosphates: · Other:
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