结论：南澳县的水源属于低氟化物水源。
Conclusion: the background fluoride level of water source in Nan 'ao is lower than other places.
与氟化物共晶型钎剂相比，有熔点低、流动性好、制备方便等优点。
Comparing with fluoride eutectic fluxes, it possesses the advantages as: low melting temperature, good wetting ability, easy to prepare, etc.
该工艺成本低，产品氟化物含量低，达到饲料级标准，符合HG2636 - 94标准。
The cost of this process is low and fluoride content in the product is small, reaching feed-grade level and meeting HG2636-94 standard.
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