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agriculture drip irrigation is widely used in Africa countries, which is lack of waters. water drop irrigation has the internation standard of 4L, 6L, 8L, etc. it can control the water flow rate to make sure the water was asbsorbed by the plants mostly. in addition, the drip inrrigation is good at fertilization. so not only the countries who lack of water need them, we also need. in addition, water saving is the most important to earth. contact me to know more about agriculture drip irrigation. Candy whatsapp: +86-15858685263 skype: anole-hc-02 www.sinomould.com