As low voltage electric appliance industry one of the industry of thermoplastic PVC (polyvinylchloride, PVC) and steel, timber, cement and said four basic building materials, and PP, PE, ABS, PS said five general resin and output and consumption are at the top. In the architecture field of widely used all kinds of profiles, pipes, and power system of wires and cables, agricultural use hoses, medical equipment, with a blood transfusion medical gloves are all derived from the PVC. Can say, PVC in the production and living areas everywhere, and economic development situation closely linked. At present, China has become the world's first big PVC producer and consumer. But, in these two behind the first in China, is the PVC capacity has five consecutive years of demand is nearly 2 times, in other words, PVC production enterprise average about 50% of the capacity of long-term "unemployment".kitchen exhaust range hood...