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高性价比,自然是安防产品选购的第一要素。除此之外,还得具备以下四大卖点。1.低价位:毫无疑问,民用市场有别于政府、企
Cost-effective, natural security products to buy the first element. In addition, you have to have the following four major selling points. 1. Low price: There is no doubt that the civilian market is different from the government, enterprises