Portland Bluesilicone is a brand of nantonin group for silicone products. It was founded in 2009 and after 10 years development, now bluesilicone is a international silicone manufacturer combing R&D ,manufacturing and marketing. now we have three branch factories for silicone raw materials in Dongguan city Guangdong province and Guiyang city Hunan province which covers more than 30000sqm and we have 8 international advanced chemical production lines....