Established in 1990, Ruian Ocean Lock factory is one of the largest lock cylinder and cylinder lock factory in China. Our factory have aluminium cylinder, brass cylinder, iron cylinder, zinc alloy four type lock cylinder.and have specialized in cylinder lock for about 20 years.we have rich experience of production. Our Ocean Lock Factory's lock cylinder mainly sell in Eastern Asia,Southeast Asia,Western Europe,Africa and have won good market in many countries. Ocean Lock Factory ...