Hi Benny, I have question to ask. Take a look at the below paragraph from a news article:

今年4月，正大鞋城与中国人民保险公司哈尔滨分公司（以下简称人保哈尔滨分公司）签订了以经营财产为标的、保险金额为102万元的个体商业定额综合保险合同，包括主险及附加水渍险，并依约缴纳了6912元保险费。

I don’t understand the term 水渍, seems like a technical or professional term, what does it mean? Also, what does 依约缴纳 means?

Thanks!