ph test paper

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[CN] Guangzhou Norm Scientific Instrument Co.,Ltd [Manufacturer]
Key Products/Services:
Business Overview: Guangzhou Norm Scientific Instrument Co., Ltd. is located in Guangdong, China, enjoys a very superior geographical advantages: It��s near Guangzhou port an...

USD $0.93

[CN] Sanmenxia Kind Ind.Trade Co.,LTD. [Manufacturer]
Key Products/Services:
Business Overview: KIND IND.TRADE CO.,LTD was established in 1999,adjoined the long-hai railroad and lian-huo highway,the transportation facilitates extremely.Engaged in e...