1. ISO 2. 3 working day for sample 3. Customized order acceptable ... for telecom, metal enclosures for electronics Winnsen Industry Qualification includes:ISO 9001:2008 RegisteredD&B RegisteredCabinet for telecom, metal enclosures for ... , sheet metal control box, steel boxAbout UsWe are an ISO certified professional manufacturer of sheet metal fabrication parts, including sheet metal control ...