... Petroleum, chemical, power, gas, metallurgy, shipbuilding.construction,water and nuclear power etc. Packaging: seaworthy package,Plywood Cases or ... Petroleum, chemical, power, gas, metallurgy, shipbuilding.construction,water and nuclear power etc. Packaging: seaworthy package,Plywood Cases or ... Production Facility Certificate: Package: The eighteenth National Congress of the CPC pipe fittings