7 pcs gas heater parts size:3/8" 1/2" 3/4" with CE and ISO9001 certificates Packing specification: 1. Theshrink and KLD brand red paper/set 40 sets/ctn 2. If customer need, we can provide the special and colorful package according to the customer's requirements. Quality and Inspection: 1. Regular checking when production in each workshop. 2. One special inspector inspects the products in random during the period of production in each workshop. 3 Before packing, all the products being delivered will be final inspected, including the sealing, screw, painting, function and so on. 4. We can provide the certificates and the pictures of a series testing equipments for view if customer need. Primary Competitive Advantages: 1. Our company has years' experience in producing all kinds of radiator fittings, and we have self-operated importing and exporting rights. 2. All products are approved by ISO9001 and CE 3. We can produce the valves and fittings according to our customers' requirements, and if the order is large(20 GP), we don't charge any modle fee. 4. We welcome to become our sales agency, and we will give our customer the special prices once the customer become our approved agency.