Overview

GST Lab (深圳市通规技术检测有限公司, General Standard Testing) is a third-party laboratory founded around 2007. It is not a tax authority and it is not the Goods and Services Tax filing system used in Australia, India, or Canada. Cross-border sellers come here for CPC, ASTM children’s standards, CE/UKCA, FCC, UN38.3, ISTA packaging, and Amazon TIC “design verification” (DV) on the attribute. The site lists CNAS, CPSC (Lab ID 1420), CMA, and ISTA credentials, and a 2020 note that Amazon accepted GST as a platform compliance provider.

VAT, IOSS, and GST returns are out of scope. Test reports and certificates before you list toys, electronics, or cosmetics are in scope. A July 2026 story on the site announced a Dongguan branch. On 2026-09-06, https://www.gst-lab.com loaded; the old catalogue http:// URL can move to HTTPS. Report verification sits at cc.gst-lab.com.

Core features and advantages

Amazon DV / TIC and CPC

Children’s toys and juvenile products on US/CA often need a TIC-lab report plus CPC and CPSC eFiling. GST says results can sync into Amazon so sellers do not upload the wrong PDF. Marketing pages have cited roughly seven working days on rush and about fifteen on a standard comparison — treat those as queue estimates, not a contract SLA. North American children’s reports are commonly valid for a year; you retest before peak, you do not file once and forget.

CE, FCC, UKCA, and UN38.3

The menu includes CE, CPC, FCC, UKCA, GCC, FDA registration, UL/CSA/ETL, UN38.3, GPSR, MSDS/SDS, and ISTA. Lithium cells blocked by Amazon or airlines need UN38.3 and transport identification before listing, not as an attachment to a VAT return. Cosmetics follow SCPN, CPSR, CPNP paths that have nothing to do with a VAT number.

Lab credentials and sample handling

Copy describes several thousand square metres in Shenzhen, plus Dongguan. You ship samples; you do not generate a certificate in the browser. Use the CPSC and CNAS numbers on the report header. Amazon rejects TIC work from labs that are not on the list, which is how brokered “reports” fail review.

Supported platforms

Work is aimed at Amazon US, Canada, Europe, and UK listing gates, and similar toy/CPC asks on Temu. It does not fill Seller Central VAT forms and it does not register German packaging or WEEE. GPSR still needs an EU authorised representative even if the lab issued the test.

Who it's for

Toy, juvenile, electronics, and textile sellers who need CPC/ASTM for the US or EN71/CE or UKCA for EU/UK, plus UN38.3 for lithium.
Small teams without an in-house compliance hire who want a lab signature instead of a chain of brokers.
Skip it if you only sell adult apparel with no test request, or if you only need UK VAT filing — that is eVAT Master or Wincomply.
Wrong search: anyone typing “GST” to file Australian GST will not find a tax number here.

Concrete use: when Amazon flags DV or children’s compliance, match the ASIN category and destination standard (ASTM F963 is not EN71), ship samples and packaging, and require CPSC/CNAS IDs on the header. A factory “declaration of conformity” is not a CPC.

Pricing and value

There is no public rate card. Directory listings say quote by phone. Promo pages mention volume and rush discounts; amounts are unverified. Fees move with SKU, standard mix, and peak queues. A failed resubmission usually costs more than shopping a cheaper broker.

Community feedback

There is almost no Reddit trail. Conversation is in Amazon seller groups, Chinese classifieds, and the lab’s own case pages. Sellers ask three things: TIC whitelist, whether the lead time hits Prime/Christmas, and whether Amazon will bounce the PDF. Self-reported pass rates are high; third-party audits are scarce. Check the lab IDs against Amazon’s list rather than treating ads as audited stats. Contact: info@gst-lab.com, site phone 15115390610.

Competitive positioning

GST Lab issues reports. eVAT Master and Wincomply sell VAT/EPR/EU-rep and may refer testing; they are not a CPSC lab. The technical-barriers site helps you see which certificates a market wants; it does not test. SGS, Intertek, and TÜV are more familiar to Western retailers and often run on different price and calendar — useful for brand or retail admission. Smaller Amazon sellers more often use a Shenzhen lab that already has a CPSC number for DV.

Alternatives

Technical Barriers Resource Network: list the destination certificates before you buy a test plan.
eVAT Master: for VAT/GST filing, not CPC/CE reports.
Amazon: check the current Seller Central DV/TIC rules and upload path.

Limitations

No online prices. Lead times slip with samples and holiday queues. A DV pass is not an EU representative or EPR. Reports expire. The GST acronym collides with tax search. Sales are often closed on WeChat or phone; put retest and eFiling terms in the order.

Verdict

For Amazon listings that need children’s, electrical, or CE/FCC evidence, GST Lab is a named CPSC/CNAS option. Do not use it to file VAT or IOSS. Confirm the current TIC list and the report header before you ship samples.

Next step: open gst-lab.com, send the ASIN category and destination to info@gst-lab.com, and use the technical-barriers site if you still need the standard list.

Data notes

Rechecked 2026-09-06 against gst-lab.com home, about, Amazon DV pages, and the Dongguan opening note. Email from public listings: info@gst-lab.com. published is 2007-01-01 from the official “founded in 2007” line; the exact day is unverified (registry sources also cite 11 July 2006). monthlyVisits, domainRating, and authorityScore are catalogue placeholders, unverified. Fees and rush days need a written quote.

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