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50g slow open brass cartridge zhejiang hongming plumbing technology co, ltd are fast growing russia market 50g slow open brass cartridge suppliers and company, more than 96 pourcent of our products are exported with stable quality and competitive price. and has won good reputation. we offer oem russia market 50g slow open brass cartridge. now, these products are export worldwide in middle east,africa, east europe, asia and south america areas.