China Junction PVC Box Manufacturer & Factory

Our circular junction boxes, switch boxes, and conduit fittings are tooled and molded in strict alignment with BS 4607 and BS EN 61386 specifications for 20mm, 25mm, 32mm, 40mm, and 50mm system configurations. Furthermore, we maintain full dimensional tooling for European metric series (16mm to 50mm) and imperial ASTM series (1/2" to 2"). Official test reports for CE conformity and RoHS hazardous chemical compliance are held on file for immediate customer verification during import clearance.

For standardized catalogue SKUs, our baseline production MOQ is equivalent to one mixed 20-foot container (allowing distributors to mix circular boxes, conduit pipes, trunking, and fittings into a single shipment). For single-SKU trial orders, we accept starting quantities from 20 to 50 master cartons. Standard production lead times run between 15 to 25 days post-deposit confirmation. Customized color matching, private-label box printing, or laser marking adds approximately 5 to 7 days to the production cycle.

Yes. With over 900 sets of in-house tooling and our dedicated tool shop in Foshan Shunde, we provide complete OEM and ODM design capabilities. We can fabricate new injection molds based on technical CAD/STEP drawings within 30 to 45 days. Additionally, we provide custom ink-jet/laser brand printing directly on the PVC box surfaces, customized Pantone color compounding, and full-color branded outer master cartons with customer barcoding.

Every batch of raw PVC compound undergoes melt flow index checking and laboratory flame testing to guarantee UL94 V-0 compliance (self-extinguishing within 10 seconds). During injection runs, calibrated plug gauges verify socket inner diameters and wall thickness at 2-hour intervals. Samples are randomly pulled for low-temperature impact tests (-15°C) and glow-wire ignition testing (up to 850°C). Inspection certificates travel with every export container.

We produce specialized weatherproof terminal enclosures and adaptable junction boxes equipped with pre-molded nitrile/EPDM rubber seals that achieve IP65 and IP66 ingress protection ratings. For high-UV environments, we incorporate specialized light-stabilizing titanium dioxide additives into the raw uPVC resin to eliminate degradation from intense direct solar exposure.

Our export sales engineers utilize specialized container optimization software. Upon receiving your requested bill of quantities (BOQ), we generate a detailed packing proposal detailing carton counts, gross weights, total Cubic Meters (CBM), and a 3D visual loading diagram for 20GP, 40GP, or 40HQ containers, ensuring zero wasted freight space.