SINRORA
SINRORA
China Sourcing Agent
Quality Control

1-by-1 Product Inspection & Factory Audit

We are the only sourcing company that provides 1-by-1 inspections to minimize defect rate to zero. Free factory audit for every new supplier.

Pre-Shipment Inspection (PSI)

AQL 2.5 standard inspection before goods leave the factory. Detailed report with photos.

During-Production Check (DPI)

Inspection when 20-30% complete to catch issues early.

Initial Production Check (IPC)

First-article inspection after production starts.

1-by-1 Product Inspection

Inspect every single unit. Minimize defect rate to zero.

Factory Audit

On-site audit of factory's quality system, production capacity, and compliance.

Loading Supervision

Monitor container loading to prevent short-shipment and damage.

How It Works

01

Book Inspection

Tell us product, quantity, factory location, and inspection date.

02

Inspector On-Site

Our inspector visits the factory with checklist and tools.

03

Report & Photos

Detailed report with photos and pass/fail decision within 24h.

04

Follow Up

We work with the factory to fix any issues found.

Frequently Asked Questions

What is AQL 2.5?+

AQL (Acceptable Quality Level) 2.5 is the industry standard for consumer goods. It means up to 2.5% defects are acceptable. We use AQL 1.0 for stricter clients.

How long does an inspection take?+

Typically 4-8 hours depending on quantity and product complexity. Full-day inspections are common for 1000+ unit orders.

What happens if the inspection fails?+

The factory must rework the defects and we re-inspect (often free of charge for the second visit within the same order).

How much does QC cost?+

Standard inspection: $200-300 per man-day. 1-by-1 inspection: $0.20-0.50 per unit depending on product.

Need QC for your next shipment?

Get a free quote within 1 business day. No commitment, no fees.