... ), phosphate(PO4), silicate(Si),beryllium(Be), osmium(Os) and thallium(TI), etc..2)Our product has a strict control system ... contaminants. After many years of accumulated experience, Qingdao Sea-Salt Aquarium Technology Co., Ltd. has formed a complete service ... periodically test water samples of our clients and produces sea salt products according to the clients freshwater sample features. According ...