Looking for information on Shenzhen Vanq Technology Co Ltd who is based in Guangdong China that sells LED Diode. If you’re looking for information on this company, then read the below experience of one buyer who ended up having problems with this company so you make sure you avoid having the same problems also.
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Shenzhen Vanq Technology Co Ltd
#B Bldg, Debaoli Tech Park, #312 Jihua Rd., BanTian Street, LongGang Dist., Shenzhen, Guangdong, 518129, China
Initial contact with the supplier:
Introduced by a 3rd party
Type of product(s) being purchased:
Value of the Purchase Order when the incident occurred:
Under 1,000 USD
Destination market of order in question:
Type of Complaint(s):
Stage of relationship with the supplier at the time of the incident:
2016, Our company about to go into grow light business. We as an assembly factory would like to purchased material, like LED diode.
1. search engineer www.baidu.com,, this VANQ company is in quite top list in Chinese search engine.
2. A colleague Dennis’ friend in LED from England,he recommend VANQ.
In 2016,we visit VANQ and took a tour with their office and show room. We did not ask and not able to see their workshop.
In the late 2017,we consulted Mr.Chan from Vanq for a 365nm LED diode problem, that problem happens the lens of the diode getting yellowing after 4-6weeks. As Mr. Chan’s reply is the glue is over driven under 365nm wave light. It seems Vanq understand this problem, trust for VANQ is gained. It seems they understand why this diode getting yellowing.
We need UV diode 360nm to some customized agricultural lamps.So we decided to use Vanq diode.
LED Order Quantity:
VQ-POO3UV365 400PCS 365nm
VQ-POO3B450 400PCS 450nm
VQ-P003W6500 1300PCS 450nm
VQ-P003G515 400PCS 515nm
Contract number VQCC18062201
Problem happens only the 365nm diode, very expensive diode. It is not saying Vanq price high or low, every company’s 365nm diode is SIX times more expensive. 1.5USD/PCS,June.22,2018.
Step 1.After soldering, (manually under strict handling instruction), 34pcs failed to light on. 34/400=8.5%, Eight point five percent according to the order.
Step 2, 20 lamps move into aging test procedure. 10 UV LED each lamp, 200 UV diode in total.UV diode started failing since Hour 2, totally 11 hours later,28pcs diode in 20 lamps dead.
Diode percentage, 28/200=14%.
Then aging test is called to stop, QC Peter Long claimed the lamps failed and aging test no need to go on.
Vanq team appear and said, as they are not watching our production procedure, problems or reasons are not able to identified or located.
They took one lamp, (10 UV diode ) and replaced the 3 dead LED. And did 5 hours ageing test at their factory. Liteto People is not with them.
As Liteto notice, the lens on the UV LED is made of silicon, soft one. Liteto believe it is the heat that warm up the silicon, the expanded silicon breaks the gold wire connection junction. It is believed as design problem by Liteto.
They offer second type diode as replacement, but Liteto need to pay for the whole batch order.
As we needed to deliver finished lamp as scheduled, No matter what happens in your sourcing chain, we deliver the result, that is our company’s customer service motto.
We gave in and pay for the seconded 500 UV diode. We removed the Type One UV LED, and put Type Two on,in which there was not a single diode dead.
When we tried to claim for the first type of UV LED. Vanq offers a solution, Vanq will sell LED to Liteto with cost price, until order covers the total lost 600USD.
In July 31, 2018， Vanq offer a new price 1.42USD/PCS, comparing to 1.5USD/PCS,5.3 percent is deducted. Great jobs!
All data above is accurate.
Written by Peter Long. CEO of Liteto
Carefully deal with this company. Store and secure evidence that every procedure. They often claim that it is the production procedures, transportation that kill the diode, which most of us will not pay attention to store video record.
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