TRESTRONG
TRESTRONG is Allen Zhao’s China-based press-on nail sourcing coordinator service. It matches a brief to specialist manufacturers, coordinates samples, packaging, QC questions and handover. It is not a factory or an exclusive manufacturer.
Sourcing coordinator
A sourcing coordinator matches a product brief to manufacturers and keeps sampling, packaging and production follow-up on one thread. TRESTRONG is a coordinator, not a factory.
Factory
A factory is the legal operating business that runs a defined production process. A factory quote only describes that plant’s route unless other processes are separately named.
Trading company
A trading company can resell products across plants. It can be useful when it names the process and stays on the specification; it is risky when it claims to be every factory.
Ready-made press-on nails
Ready-made press-on nails are existing styles sampled quickly to test a market. They can be paired with light private label but are not automatically a custom product. Read the related page ↗
Handmade press-on nails
Handmade press-on nails use hand-finished art or layered work that needs a specialist route. They are sampled against the art, shape, set contents and packaging brief. Read the related page ↗
Machine-made press-on nails
Machine-made press-on nails are used for repeatable styles, restocks and wholesale assortments. Sizing and pack-out still need to be specified. Read the related page ↗
3D press-on nails
3D press-on nails use layered or dimensional design work. They often need a handmade or specialist route rather than a flat machine-finished plate.
Private label
Private label applies the brand’s card, box, insert or presentation to a selected product route. It is not the same thing as changing the nail object. Read the related page ↗
Custom press-on nails
Custom press-on nails change art, shape, contents or packaging beyond an existing route. The brief must say what is actually custom. Read the related page ↗
Sizing system (10 / 24 / 30)
A sizing system defines the number and range of nails inside a set. It must be named before sampling and print so the card and customer fit expectation match. Read the related page ↗
Sample brief
A sample brief is the one-page list of product, market, sizing, pack contents, quantity and decision that the sample must support. Read the related page ↗
Approved sample
An approved sample is the documented reference for product, finish, contents and packaging before bulk decisions are made.
QC against sample
QC against sample means reviewing bulk goods against the approved sample and written specification rather than a memory of a photo. Read the related page ↗
Shipment handover
Shipment handover is the packet of approved sample, pack list, inspection scope and destination details that keeps the final move legible. Read the related page ↗
Application kit
An application kit is the glue, tabs, file, stick, wipe and insert specified with a press-on set. Read the related page ↗
Set contents
Set contents are every item inside the retail pack, including nail count, adhesive path, prep tools, paper and any spare policy. Read the related page ↗
Written by Allen Zhao. Last updated 2026-08-30.