Frequently asked questions

Because ECG output is tied to a specific vendor's process - their RIP software, ink chemistry, press profiles, and substrate calibration. Two vendors running the same 7-color process will produce different output from the same file, sometimes visibly so on saturated colors or large flat areas. Splitting a SKU across vendors reintroduces the inconsistency ECG was designed to eliminate.

ECG earns its keep in a few specific situations.

When your colors need it:

• Your product sells on bright, saturated color. Think slime, toys, beauty, or pet products, where that pop of color is part of what you're selling. CMYK often makes these shades look flat or muddy.
  CMYK

  ECG

  Vivid orange

  CMYK

  ECG

  Bright green

  CMYK

  ECG

  Violet

  CMYK

  ECG

  Reflex blue

  Colors shown are on-screen approximations. We're happy to send a printed proof.

• Your palette is light and soft. Pastels and pale tints can come out looking a little dusty or grey in CMYK. ECG keeps them clean and fresh.
  CMYK

  ECG

  Lavender

  CMYK

  ECG

  Mint

  CMYK

  ECG

  Peach

  CMYK

  ECG

  Baby blue

  Colors shown are on-screen approximations. We're happy to send a printed proof.

When your business needs it:

• You're printing licensed products. Licensors check character and brand colors closely. If a key color falls outside what CMYK can hit, ECG can be the difference between a smooth approval and a costly reprint.
• You have a large family of SKUs. When you're managing dozens of variants, ECG helps every box match the next one on the shelf, and lets those variants share press time.

• Your design uses just one or two flat colors. A single spot ink is simpler and more affordable.
• Your colors already print well in CMYK. Earth tones, muted neutrals, and natural photography look great in standard four-color, so there's no need to pay for range you won't use.
• A large solid area has to match an exact Pantone. If your brand guidelines call for a certified spot color across a big flat area, a dedicated spot ink will give you the smoothest result.

Flexible packaging (pouches, films, flow wrap), corrugated shipper boxes, and US-based fulfillment and warehousing. For anything outside our scope, we can bring in partners — your project stays coordinated from one point of contact.

We stock SBS (210–400 gsm), CCWB (250–450 gsm), CCNB (250–450 gsm), C2S (105–400 gsm), and E-flute corrugated (litho-laminated or direct print). If you have a specific spec in mind, send it with the brief.

Brief and file submission → physical prototype airshipped in 7–10 days → approval and deposit → production (3 weeks ex-factory) → delivery FOB Ningbo or DDP. Ocean freight from Ningbo: ~45 days to US West Coast, ~60 days East Coast, ~30–35 days Northern Europe. Share your target in-hands date in the brief and we'll work back from there.

Our prepress and structural engineering team can advise on structure, materials, and finishing options from a manufacturing standpoint — what's achievable, what's cost-effective, and what works for a given channel or format. What we don't replicate is brand-side design: your visual identity and creative direction belong with whoever knows your brand. Come to us with a brief and no dieline, and we can get you there. Come with a finished design, and we'll make it print.

Sinso runs lean by design. The US operations lead is your single point of contact for briefs, quotes, proofs, timelines, and anything that needs a judgment call — no account manager layer in between. On the production side, you have direct access to the Ningbo team: the same people running the press and finishing line, not a customer service function. That structure keeps decisions fast and context from getting lost in translation.

Yes. We ship packaging wherever it gets filled: a co-packer in the US, a factory elsewhere in Asia, a 3PL, a port, or a final address. One production run can be split across several destinations. Most programs ship by sea; air freight is available when timing calls for it.

Either. Folding cartons usually ship flat to keep freight costs down. Rigid boxes, windowed builds and multi-component packs can be assembled and kitted at our Ningbo factory before shipping, which typically costs less than doing it in the US.

Yes. Components we don't make ourselves, such as thermoformed trays, hardware and closures, come through our supply chain and are assembled with the printed pieces at our factory. You get one finished package and one point of contact.

No. 118 Huiming Road, Fenghua High-tech Development Zone, Ningbo, Zhejiang, China. The site covers more than 12,000 sqm with 15,000+ sqm of production floor.

Ningbo is one of the world's busiest cargo ports and a dense manufacturing hub for toys, electronics, and consumer goods. Component suppliers are typically within an hour of the factory — which compresses the feedback loop between packaging development and the product going inside it.

Ningbo Sinso Printing Co., Ltd. was founded in 1998. Sinso has 25+ years of continuous operation.