ABOUT
We supply power adapters, chargers, and cable assemblies to US buyers, and we take title to everything we sell.
Most companies that do this are brokers. They find a factory, mark up the invoice, and disappear once the container clears. We came the other way around. Our family has manufactured switching power supplies and cable since 2005 — first in Jiangsu, China, and since 2018 in Vinh Phuc, Vietnam, where the boards are populated, the cable is molded, and every unit is tested before it ships.
Kestner exists because those plants can build the same part in two countries, and almost nobody else can offer that. Same drawings. Same test reports. Same engineers. You choose the country of origin. When the tariff schedule moves — and it has moved repeatedly in the last eighteen months — you move your volume without requalifying a supplier, re-listing a UL file, or explaining anything to your own customer.
What we sell is not access to a factory. It is a single American counterparty who takes the risk you don't want. You buy from a US company, in dollars, on US paper. We are the importer of record. If a classification is wrong, that is our problem. If a shipment is late, you call one number and a person picks up.
I grew up in this business. I can tell you what the injection molding line sounds like and how long the ICT test takes, because I have stood next to both. I studied economics at the University of Chicago and then went back to the thing my family actually knows how to do.
My given name is 尚烨. It happens to sound almost exactly like 商业 — the Chinese word for commerce. My parents deny doing this on purpose.
shangye@kestnersupply.com · [PHONE]