Siffto International
Siffto is a professional foreign-trade company specializing in hardware sourcing and private-label manufacturing. We operate a vetted supplier network covering the whole of China and provide end-to-end OEM/ODM support — so overseas buyers get one accountable partner instead of managing a patchwork of factories.
Our supplier network spans China's major manufacturing clusters, covering kitchenware, gardenware, outdoor and related products. Every factory is assessed on production capacity, quality control and export experience before it joins our shortlist, and we re-audit regularly so the list stays current.
From product selection and sampling through prototyping, tooling, in-line inspection and compliance paperwork to private-label packaging and consolidated shipping, we manage each step on your behalf. You send the requirement; we return a finished, inspection-backed shipment with the documentation your market requires.
200+
Partner factories
Vetted across China
16+
Countries served
Export destinations
680+
Core products
In our sourcing range
≤12h
Response time
Avg. first reply
7-14days
Sampling
From inquiry to sample
Workshop
Siffto International
Warehouse
Finished-goods storage with FIFO rotation and consolidated shipping readiness.
Packing Workshop
Custom cartons, barcode labeling and export-grade drop-test packing.
Polishing Workshop
Mirror and satin finishing for stainless-steel surfaces and edges.
Laboratory
In-house testing lab — see the full test list in the section below.
Assembly Workshop
Component assembly with in-line QC and function checks.
Cleaning Workshop
Ultrasonic wash and passivation before final packing.
Heat Treatment
Hardening and tempering to extend blade service life.
Laser Cutting Blade Workshop
Precision laser cutting of blade blanks and steel parts.
LABORATORY
Siffto International
Quality is verified, not assumed. Our inspection routine covers more than a dozen standardized checks on materials, blades and finished products before release — these confirm hardness, corrosion resistance, cutting performance and food-contact safety, so the goods you receive match the samples you approved.
Blade Broken Test
Checks blade edge resistance to sudden impact and fracture.
Blade Stress Test
Verifies fatigue strength under repeated bending loads.
Cutting Edge Angle Test
Confirms consistent edge geometry across production batches.
Cutting Performance Test
Measures real cutting results on target materials.
Dishwasher Test
Cycles products through dishwasher exposure for durability.
Handle Pulling Test
Tests handle-to-body joint strength under pull force.
Material Spectrograph Test
Confirms alloy composition against specification.
Metallographic Analyzer
Inspects internal microstructure for hidden defects.
Rockwell Hardness Test
Grades surface hardness on the Rockwell scale.
Salt Spray Test
Assesses corrosion resistance in salt-mist conditions.
Salt Water Test
Simulates marine exposure for rust protection.
Temperature Test
Evaluates tolerance to thermal shock and extremes.