Views: 0 Author: Peter Cui Publish Time: 2026-05-26 Origin: Mitour Silicone
TL;DR Becoming a Walmart-approved silicone supplier requires passing a BSCI social audit (Grade B minimum), a factory GMP inspection, product testing to Walmart's own protocol, and ongoing annual audits. Mitour Silicone first passed Walmart's supplier audit in 2019 and has supplied Walmart and Target continuously since then. This article is the inside account — what the first audit found, what failed, what we fixed, and what any silicone manufacturer needs to prepare before Walmart walks through the door. If you are an importer building a silicone product line for Walmart, this is what your supplier's factory file should look like.
Walmart requires a minimum BSCI Grade B social audit before approving any new supplier
The factory GMP (Good Manufacturing Practice) inspection covers 14 categories; our first audit in 2019 flagged 3 non-conformances
Product testing follows Walmart's WQTS (Walmart Quality Testing Standard) protocol — different from standard ASTM or EN testing
Approved supplier status requires annual re-audit plus quarterly self-assessments filed through Walmart's Retail Link portal
First-time audit failure rate for silicone factories is high — our 2019 experience included one major and two minor non-conformances on the first visit
Mitour Silicone has been a Walmart supplier since 2019 across baby, kitchen, and promotional categories
Target approval (also 2019) runs a parallel process with some different documentation requirements
Most brand owners who come to us for a Walmart-ready silicone supplier underestimate what Walmart actually requires. They have worked with mid-tier retailers before. They know about ISO 9001 and BSCI. They believe that having third-party test reports from SGS is enough.
It is not enough.
Walmart's supplier program is structured around three independent approval streams that must all clear before a single unit ships. You need product compliance approval, factory quality approval, and factory social compliance approval. Failing any one blocks the others. The three streams run in parallel but require separate documentation, separate auditors, and separate timing.
We went through this for the first time in 2019. Here is exactly what happened.
In early 2019, a US-based baby brand we had been manufacturing for under private label informed us that they were negotiating a Walmart national distribution listing for a silicone baby tableware line we had been producing for their direct-to-consumer channel. The buyer's Walmart category manager was requesting a factory audit within 60 days.
We had ISO 9001:2015, BSCI audit history (a Grade A from 2017), and FDA 21 CFR 177.2600 test reports for all the SKUs in question. We felt prepared. We were not as prepared as we thought.
Walmart's audit process in 2019 was managed through a combination of their internal compliance team and SGS as the approved third-party auditor. The auditor would visit our 4,500 m² facility in Shenzhen for two full days. The scope covered:
Social compliance audit (BSCI framework): Labor practices, working hours, wages, worker welfare facilities, management systems
Factory quality system audit (Walmart GMPs): Documentation, production controls, testing capabilities, traceability
Product testing submission: Physical samples of all SKUs submitted to Walmart's approved lab for WQTS testing
The social audit result from 2017 was accepted as the baseline. The quality audit was the unknown.
Walmart's factory quality system audit at the time covered 14 evaluation categories. I am going to walk through each briefly because the detail matters for any factory preparing for this inspection.
Category 1 — Management Responsibility: Do senior managers have documented quality objectives? Are quality targets reviewed at least quarterly? Our quality director had a review cadence of semi-annually. The auditor flagged this as a minor non-conformance — we changed to quarterly review within 30 days.
Category 2 — Document Control: Are all current versions of work instructions at the point of use? Are obsolete documents removed? We had one case where an older version of our silicone compound acceptance criteria was still posted at the material intake station. One minor non-conformance.
Category 3 — Training Records: Can you demonstrate that every operator on the production line has documented training specific to their operation? We had training records, but several were filed in our HR system rather than the production floor file. Auditor required them in both locations.
Category 4 — Production Controls: Are critical process parameters documented and monitored at the machine? Barrel temperature, injection pressure, cure time — all must be logged per shift. We had real-time monitoring on our LSR injection machines but shift logging was inconsistent. This was our major non-conformance from the first audit. I will return to this.
Category 5 — Incoming Material Inspection: Do you have documented acceptance criteria for every raw material? Test or verify every lot? Our silicone compound acceptance criteria were documented. Our pigment inspection was verbal — we relied on supplier CoA only. Minor non-conformance; we added internal pigment batch verification within 60 days.
Category 6 — In-Process Inspection: AQL plan documented and followed? Defect data collected and analyzed? We had AQL 2.5 for visual inspection. The auditor wanted to see trend analysis of defect data over the preceding 6 months. We had the data; we had not been running trend analysis. We committed to monthly defect trend reports.
Category 7 — Final Inspection: Is 100% of shipment covered by a documented final inspection record? We had sampling-based final inspection per AQL 1.0. For Walmart SKUs, the auditor required a commitment to 100% visual inspection on each production run, with records retained for 3 years.
Category 8 — Calibration: Is every measuring instrument calibrated on a documented schedule? Are calibration records traceable? Our CMM and shore durometers were calibrated. Two handheld vernier calipers used on the production floor did not have individual calibration tags. Corrective action: tag all measuring instruments, schedule annual calibration through our metrology lab.
Category 9 — Non-Conforming Product Control: Is there a documented quarantine area? Is non-conforming product clearly labeled? We had a quarantine area. It was not consistently labeled. We painted the floor zone red and added bilingual (English and Mandarin) labels on the quarantine bin within 2 weeks.
Category 10 — Corrective Action System: Do you have a documented CAPA process with root cause analysis and effectiveness verification? We had a CAPA system. Effectiveness verification was missing — we closed CAPAs after implementation but did not re-verify 30 days later. Added to our process.
Category 11 — Internal Audits: Are internal quality audits conducted at least annually? Documented findings addressed? We had this in place. No non-conformance.
Category 12 — Customer Complaint Handling: Is there a documented process for receiving, investigating, and responding to customer complaints with data retention? We had this in place. No non-conformance.
Category 13 — Testing Capabilities: What in-house testing can the factory perform vs. what is outsourced? Do you have a current approved lab list? We had in-house shore durometer, tensile tester, and vision system. Chemical testing goes to SGS. The auditor asked for our lab's scope of accreditation certificate. We had it on file but it was two years old — the updated version was in our quality manager's email. Minor finding: file management.
Category 14 — Supplier Management: Do you have documented criteria for approving raw material suppliers? How are they monitored? We had an approved supplier list but it had not been formally reviewed in 18 months. Committed to annual review cycle with documented re-approval.
The major non-conformance — Category 4 — deserves more detail because it was the finding that nearly delayed our approval.
Our 20+ LSR injection machines are equipped with Siemens process monitoring units that log barrel temperature, injection pressure, and cure time continuously. The data goes to our MES server. But in 2019, we had no documented procedure requiring operators to confirm and sign off on the MES data at shift change. The machine logged the data; a human being never formally acknowledged it.
The Walmart auditor's finding: "Process monitoring data is collected but not reviewed or signed off at shift boundaries. There is no documented procedure to ensure the previous shift's parameters were within specification before the next shift begins production."
This is a subtle but critical gap. If barrel temperature drifted out of spec during the night shift and was not reviewed at morning shift handover, defective product could be produced for hours before anyone caught it.
Our corrective action, implemented within 45 days:
Created a shift handover checklist — a one-page form that the outgoing operator signs, confirming the last 2 hours of logged parameters were within spec, plus any anomalies to report
Defined a "parameter review window" — the first 15 minutes of each shift is dedicated to reviewing the previous shift's final 30 minutes of data on the MES dashboard
Added a supervisor countersignature on the handover checklist for any shift where a parameter excursion had occurred
Retroactively trained all production operators in a 90-minute session documented in our training records
The Walmart auditor revisited — in a 1-day desktop review plus a 2-hour on-site verification — 60 days after the initial audit. All three non-conformances were accepted as closed. We received conditional approval in Q4 2019 and began our first Walmart-program production run in January 2020.
The Business Social Compliance Initiative (BSCI) is an industry-led platform (now part of amfori) that audits factories on social compliance standards. Walmart requires a minimum Grade B (Good) from a BSCI audit conducted within the preceding 24 months.
BSCI audit grades run: Outstanding (A) → Good (B) → Acceptable (C) → Insufficient (D) → Unacceptable (E/F).
Our 2017 BSCI audit returned Grade A. By 2019 when the Walmart program began, the 2017 audit was still within the 24-month window, so Walmart accepted it as satisfying the social compliance requirement. We have maintained BSCI Grade A or B through all subsequent re-audits.
What the BSCI auditor checks at a silicone factory:
Working hours: Chinese labor law permits a maximum 8-hour work day, 44-hour work week, with overtime not exceeding 36 hours per month without exception. Silicone manufacturing is capital-intensive; our machines run 24/7 but operators work in 3-shift rotations with mandatory rest days. The auditor reviewed time-attendance records for the preceding 6 months across all departments.
Wages: Are workers paid at or above the Shenzhen minimum wage? Are overtime hours compensated at the required 150% (weekdays), 200% (weekends), or 300% (public holidays) premium? Our payroll records are audited annually. In 2023, Shenzhen raised its minimum wage; we implemented the increase within the statutory 30-day notice period.
Health and safety: Factory fire egress, chemical storage, PPE compliance, noise levels (we measure these quarterly — silicone injection machines run at 72–78 dBA, within the 85 dBA legal limit), ergonomics, first aid provisions.
Freedom of association: Workers must be permitted to join a trade union without retaliation. In practice, most Shenzhen factories have a management-facilitated worker representative committee. The BSCI auditor reviewed our committee meeting minutes.
No child labor, no forced labor: Age documentation for all employees. We retain copies of national ID cards for 100% of our 100+ person workforce.
Environment: Basic environmental compliance — wastewater, air emissions, hazardous waste disposal. Silicone manufacturing has a low chemical waste profile relative to other plastics processes, which helps.
The Walmart Quality Testing Standard (WQTS) is not identical to FDA 21 CFR 177.2600 or ASTM standards. It is a proprietary protocol that draws on multiple standards and adds Walmart-specific requirements.
For silicone baby products, the WQTS protocol in 2019 covered:
Chemical testing:
Restricted substances panel: heavy metals (lead, cadmium, mercury, chromium VI) by XRF and ICP-MS
Phthalates (6-phthalate panel per CPSC regulation)
BPA and bisphenol analogs by LC-MS
Nitrosamines and N-nitrosatable substances (critical for rubber/silicone)
Total volatiles (TGA method, thermal desorption GC-MS)
Formaldehyde
Physical testing:
Tensile strength and elongation at break (ASTM D412)
Shore A hardness (ASTM D2240)
Aging resistance (72-hour oven aging at 70°C, then re-test hardness and tensile)
Colorfast testing (AATCC 61 equivalent for silicone surfaces)
Safety testing:
For baby products: drop test, bite force test, pull-force on any removable element
Age grading compliance (labeling requirements per 16 CFR Part 1500)
The testing is conducted at a Walmart-approved lab — the list in 2019 included SGS, Bureau Veritas, Intertek, and Eurofins. We submitted samples to SGS Guangzhou. Results came back in 14 business days. All SKUs passed on first submission; the silicone compound we use for infant products had already been through our own comprehensive extractables testing, which is more rigorous than the WQTS chemical panel.
Walmart approval is not a one-time achievement. Here is what ongoing compliance looks like from the factory's perspective.
Annual on-site audit: Every 12 months, a Walmart-approved third-party auditor returns for a full-day factory inspection. The scope is the same 14-category quality system review plus a social compliance check (or a fresh BSCI audit if the previous one is expiring). We schedule this in Q4 each year to align with our ISO 9001 internal audit cycle — one preparation cycle for both audits simultaneously.
Quarterly self-assessments via Retail Link: Walmart's supplier portal (Retail Link) requires quarterly self-assessment submissions covering key quality metrics: customer complaint rate, on-time delivery rate, product testing refresh schedule. We assign one team member as our Retail Link administrator. The quarterly submission takes approximately 4 hours; annual reporting takes 1.5 days.
Product change notification: Any change to the product formulation, key raw material supplier, or production process must be disclosed to Walmart and may trigger re-testing. In Q2 2023, when we switched our platinum catalyst supplier for cost efficiency, we notified Walmart's supplier compliance team, re-tested the affected SKUs at SGS, and uploaded the updated test reports to Retail Link before resuming production. This is non-negotiable.
Label compliance: Walmart's labeling requirements are exacting — specific font sizes, warning statement placement, barcode specification. Our packaging team maintains a Walmart-specific label template for every SKU in the program. We check every label against the WQTS labeling checklist before any new production run.
After going through this ourselves and watching other suppliers attempt it, here are the most common failure points:
1. BSCI below Grade B: Walmart will not proceed if the social audit returns Grade C or lower. Common causes at silicone factories: undocumented overtime, inaccurate payroll records, PPE non-compliance in the mixing area. Allow 6–12 months to build a clean audit trail before applying.
2. Process parameter logging gaps (our own experience): The most common quality system major non-conformance. If your machines log data automatically but humans never formally review and acknowledge it, you have a gap. Fix it before the audit.
3. Chemical testing scope mismatch: A factory that tested to FDA 21 CFR 177.2600 may not have run the nitrosamines panel or the full phthalate panel at the sensitivity levels Walmart requires. Budget for comprehensive WQTS-specific testing before submission — a failed test report resubmission is costly and delays approval by 4–6 weeks.
4. Supplier approval gap: If any of your key raw material suppliers have not been formally qualified and documented, the Walmart auditor will flag it. Your approved supplier list needs to cover 100% of direct material inputs with documented qualification evidence.
5. Non-conforming product quarantine failure: Walmart auditors walk the factory floor. If they see parts that appear to be defects co-mingled with good production, or a quarantine area that is unclear, this becomes a major non-conformance. Physical segregation is required.
If you are a brand owner importing silicone products for Walmart distribution, here is what Walmart supplier status at your manufacturer means for your sourcing risk:
It means the factory has been through a rigorous third-party review of their quality systems. Not all factories have. A factory with active Walmart or Target or Disney supplier status has demonstrated — at minimum — that their documentation, process controls, and social compliance practices meet a defined international standard.
It does not mean the factory is perfect. No factory is. But it means that when Walmart's compliance team pulls your supplier's file, there is a substantive audit record rather than a self-declared certification.
At Mitour Silicone, we provide our Walmart audit summaries (redacted to remove program-specific data) to prospective buyers on request. If you are building a silicone product line for US mass retail and your factory cannot show you a BSCI Grade B or better from the last 24 months plus a Walmart-equivalent factory quality audit, you are carrying supply chain risk that will surface at the worst possible time — after you have placed a large purchase order.
Requirement | Walmart | Target |
Social compliance standard | BSCI Grade B minimum | Target Supplier Standards (accepts BSCI Grade A/B) |
Factory quality audit | 14-category Walmart GMP inspection | Target Quality System Assessment |
Product testing standard | WQTS (Walmart Quality Testing Standard) | Target Restricted Substance List + physical testing |
Audit frequency | Annual + quarterly self-assessment | Annual |
Self-assessment portal | Retail Link | Partners Online |
Chemical testing lab | Walmart-approved lab list (SGS, BV, Intertek, Eurofins) | Target-approved lab list |
Approval timeline | 4–6 months (clean file) | 4–5 months (clean file) |
Our approval date | 2019 | 2019 |
The two programs share approximately 70% of their documentation requirements. Factories pursuing both simultaneously save significant preparation time by running the programs in parallel.
From the moment you engage Walmart's supplier compliance process, plan for 4–6 months to achieve initial approval if your factory documentation is complete. If you need to remediate non-conformances (as we did in 2019), add 2–3 months. Total realistic timeline: 6–9 months for a factory starting from ISO 9001 baseline.
The factory pays for the BSCI audit — typically USD 1,500–3,000 depending on factory size and auditor. The audit is conducted by an amfori-approved auditor. The audit report is owned by the factory and shared with retail buyers through the amfori platform. Annual re-audit costs apply.
We supply through the brand owner's or importer's entity. We are on the approved factory list for specific brand accounts. A new brand owner who wants to use our factory for a Walmart program would work through their importer of record, and we would support the factory approval process with our existing audit documentation.
Not explicitly. Walmart's own 14-category quality system audit covers most of what ISO 9001 requires. However, ISO 9001 certification from an accredited certification body is strong supporting evidence that substantially reduces audit time. We maintain ISO 9001:2015. We recommend it for any factory seriously pursuing major US retail programs.
If a product fails chemical testing, Walmart will typically allow one resubmission after corrective action. The importer/brand owner must provide a root cause analysis and evidence of the corrective action taken before the new samples are submitted. Repeated failures result in removal of the SKU from the program. We have never had a WQTS test failure on our core silicone compounds.
Target runs a parallel process with similar requirements. Key difference: Target uses a proprietary audit tool (Target Supplier Standards) rather than BSCI, though Target does accept BSCI Grade A or B as partial evidence for social compliance. We gained Target approval in 2019 alongside Walmart. The two programs ran concurrently with about 70% overlap in documentation requirements.
Walmart reserves the right to conduct unannounced visits but in practice these are rare for factories with clean audit histories. For new suppliers in the first 24 months, a mid-year unannounced check is more likely. Our factory maintains the same operational standards daily regardless of whether we expect a visit — because the audit findings that hurt factories most are usually the ones revealed by normal operating conditions, not dressed-up conditions on audit day.
We hold ISO 9001:2015, BSCI Grade B or above (latest audit on file), FDA 21 CFR 177.2600 test reports for all infant-contact SKUs, EN 71 and EN 1400 test reports for EU-market products, REACH compliance declarations, and 300+ granted patents including 3 core invention patents. All documentation is available in our secure buyer due diligence portal.
If you are building a silicone product line for Walmart, Target, or another major US retailer and need a factory with existing approved-supplier status, reach out for a factory file review. We will share our audit documentation and help you understand what your retail buyer will see when they pull our factory record.
Email: yfsalee@mymitour.com
Factory overview: mymitour.com/our-factory.html
Certifications: mymitour.com/oem-odm/certifications.html
Quality control process: https://www.mymitour.com/quality-control.html
Baby & childcare solutions: https://www.mymitour.com/baby-childcare.html
Factory Overview — contextual in facility description sections
Certifications — contextual in BSCI and WQTS sections
Quality Control — contextual in GMP audit section
Baby & Childcare Solutions — contextual in product testing section
Contact — CTA in Next Steps
Peter Cui | 21 years of silicone manufacturing experience | 4,500 m² Shenzhen facility | Walmart-, Target-, and Disney-approved supplier | Contact: yfsalee@mymitour.com
