Effective Quality Management
Jewelry from Zearrow are produced through uplifted standards. We’ve tailored comprehensive regulations focusing on quality control, and the products are tested accordingly after every step in the manufacturing process. All these are to make sure the custom-made jewelry meet up to your expectations 100%.
Raw Material Inspection
Suppliers Risk Management
We work ONLY with suppliers who are responsible in case of morality, society, and environmental protection. All the metal and raw gemstones need both testing report and the purchase contract to be part of the future finished products, making sure they are harmless, and ethically sourced.
Each Process Has Standard Operating Instructions
Based on the ISO 9001 systems, we create and keep updating our own operating instructions to produce jewelry of even better quality. For every stage in production, we set up a specific testing round to ensure absolute quality. This is where Zearrow stands out as a different jewelry manufacturing company.
8 way to plating quality inspection processes
Superior plating to make long lasting waterproof & anti-tarnish jewelry. With Zearrow’s in-house lab, we set up a 9-step process to test and check the finished product thoroughly to keep our promise on execptional jewelry quality.
Salt Spray Test
During this test, the jewelry pieces are subject to 24 hours of continuous spraying of salt solution in 35℃, the environment PH is around 6.5 -7.2.
Vibration Abrasion Test
Helps determine the amount of wear and tear a piece of jewelry can undergo, the time period for the test varies from 5-20 minutes depending on the coating thickness.
Sulfur Dioxide Test
The test involves two stages where the first one is putting the jewelry in 10% sulfuric acid water for 24hrs and the second is to rinsed the products thoroughly with deionized water.
Artificial Sweat Test
In the 40℃ and PH5.5 environment, artificial sweat is spray onto the products constantly for 48 hrs to see if the jewelry is sweatproof and anti-tarnish.
UV Test
The items are directly exposed 24hrs under UV light to check whether they can remain an unharmed surface after UV damaging.
High Temperature Test
Jewelry pieces are put into a heated box of 150℃ for 2hrs, and are later observed to check whether there are blisters, bubbles or peeling off.
Rubbing Test
Grinded(or rubbed) 50 times back and forth by a belt, only those jewelry will a still complete coating can pass the test. This test ensures the plating coating is strong enough.
Hardness Test
This test involves pencils from 1H up to 5H and using of 1 kilo pressure. It is meant to test the hardness of the jewrelry coating.
Finish Inspection for Every Product
According to product types and technics used, later inspections cover different items focusing on the possible defections. Every piece of jewelry go through the process.
Design/Structural Inspection
Appearance Inspection
Transparency and Traceability
Depending on your product, we offer multiple selections of material to help solve issues preemptively that may occur during any time of your shipping and handling processes.
Transparent material sources
We documente the contracts we signed with every one of our suppliers. Feel free to take a look at the purchasing records if you like a lovely trip to China.
Trace Every Single Material Batch
Even after the order kicks off its shipping journey, the circle is not finished yet. If it’s what you need, we can tag the products with batch number , making them tracable all the way to their source.
Sample the Goods
If you’re curious what our jewelry look like up close and personal, order a pre-printed Zearrow Sample Kit to see our current material and print quality options..