TongSourcing
Technical reading notes for buyers specifying low-voltage power distribution equipment.
TongSourcing publishes practical reading notes for buyers specifying low-voltage power distribution equipment — how to read a type-test report, how GB/T 7251 maps to IEC 61439, how to choose an IP rating, and which parameters to put in an enquiry.
How to read a type-test report · GB/T 7251 and IEC 61439 · Choosing an IP rating · Parameters for an enquiry
Equipment specifications and project enquiries are handled at tonxel.com.
Contact: crystalhuang@tonxel.com · WhatsApp +86 136 4143 9113
Earlier material about sourcing from China is kept in the site archive. Pages from that period remain available at their original addresses.