Certifications & Quality
Fully implemented ISO 9001 Quality Management System. Products tested by authoritative third-party laboratories.
ISO 9001:2015
Fully implemented Quality Management System establishing end-to-end quality control standards from raw materials to finished products.
Automated Production
Commissioned advanced fully-automated production lines, achieving a leap in both production capacity and product consistency.
National Certified
Recognized in the Annual Inspection for Architectural Silicone Structural Sealants. Structural Sealant Recommended Producer.
RoHS & REACH
RoHS test report issued for PR-268 (Shenzhen HTT, Report No. HTT202503822CH). Our formulations are developed to comply with REACH regulation requirements.
Original Certificates & Test Reports
Scanned originals of our ISO certificate, national standard test reports and annual inspection documents. Click any certificate to enlarge.
ISO 9001:2015 Quality Management System
Guangdong Harmonious Certification Co., Ltd. (HCC) · Certificate No. 98926Q0018R053
Valid 2026-01-26 to 2029-01-25
GB 16776-2025 — Structural Silicone Sealant
China Building Material Test & Certification Group (CTC) Suzhou · Report No. 2025ML009
Applied to PR-999
GB/T 14683-2017 — Silicone Building Sealants
China Building Material Test & Certification Group (CTC) Suzhou · Report No. 2025ME158
Applied to PR-333 / 666 / 8700 / 638 / 111 / 520 / 602 / 888
GB/T 24267-2009 — Fire-Retardant Building Sealant
China Building Material Test & Certification Group (CTC) Suzhou · Report No. 2022MJ007
PR-238 · Classified SR FV-0 (3.0 mm)
JC/T 885-2016 — Mould-Resistant Sealant, Grade 0
Guangzhou Institute of Microbiology (CNAS / CMA accredited) · Report No. WJ20220708
PR-218 · Mould growth Grade 0 (highest)
RoHS Test Report — PR-268
Shenzhen HTT Technology Co., Ltd. · Report No. HTT202503822CH
Complies with RoHS Directive 2011/65/EU
Non-Hazardous Cargo Certification
Authorised marine safety testing body
Sealants ship as general cargo — no DG surcharge
2026 Annual Inspection — Qualified Product
Aluminum Window & Curtain Wall Branch, China Building Metal Structure Association
PR-999 listed No. 94 in the 2026 qualified catalogue
2026 Qualified Product Catalogue (Extract)
Aluminum Window & Curtain Wall Branch, China Metal Structure Association
Entry No. 94 — Zhongshan Pinrui Adhesive Technology Co., Ltd. PR-999
AAA Credit Rating Certificate
Enterprise credit evaluation authority
Highest enterprise credit grade
Need the full test report for a specific model? Request it here — we send un-redacted PDF reports on request.
Compliance with National Standards
GB 16776-2025
Standard for structural silicone sealants in building curtain walls — applied to PR-999 structural sealant.
GB/T 14683-2017
Standard for silicone building sealants — applied to weatherproof and door/window sealant lines.
GB/T 24267-2009
Standard for fire-retardant building sealants — PR-238 achieves the highest flame retardant grade.
JC/T 885-2016
Industry standard for mildew-resistant silicone sealants — applied to kitchen & bathroom series.
Need a certificate or test report for your project?
We send original test reports and certificates for your submittal. Tell us the model and the standard your project requires.
- Free adhesion & staining test on your own substrate sample
- OEM & private label from 1,000 pcs
- Typical lead time 15–25 days