Frequently Asked Questions

Standard European and North American formulas often suffer from bond hydrolysis or premature chalking under tropical UV and monsoon moisture. PIROI silicone sealants feature enhanced siloxane crosslinking densities, UV stabilizers, and broad-spectrum Grade-0 mildew fungicides. Our formulations are tested to withstand continuous 35°C+ ambient temperatures and 85%+ relative humidity without bubbling or adhesion loss.

Neutral cure cartridges and sausages carry an official 12-month shelf life from the date of manufacture, while acetoxy formulations carry a 9-month shelf life. Cartridges should be stored upright in a shaded, ventilated warehouse between 5°C and 27°C. Avoid prolonged storage under direct equatorial sun or temperatures exceeding 32°C inside uninsulated metal shipping containers on construction sites.

Our standard OEM minimum order quantity starts from just 1,000 pieces per SKU for cartridge products, making it low-risk for regional distributors to launch their own brand. For 590ml foil sausages, MOQ can be discussed based on color and packaging film requirements. We support full multi-color silk-screen printing on cartridges, custom barcode allocation, and multi-language packaging (Vietnamese, Thai, Indonesian, English).

Yes, absolutely. We provide 2 to 4 free sample cartridges or sausages for qualified contractors, engineering consultants, and commercial distributors. Samples are shipped by express courier (DHL/FedEx/SF International). Customers simply cover the courier fee, which is fully credited against your first commercial container contract.

Yes. Beyond standard Clear, White, Black, and Grey colors, our in-house colorimetry lab provides custom architectural color matching against RAL color codes or physical aluminum profile samples within 5 business days. If you send us a competitor sample from your local market, our laboratory will analyze its specific gravity, tensile modulus, and tack-free time to engineer an equivalent or upgraded formulation.

Under the China-ASEAN Free Trade Agreement (ACFTA), goods manufactured in China accompanied by an official FORM E Certificate of Origin qualify for preferential tariff treatment under ACFTA. Whether that results in a zero or reduced rate depends on the destination country and the HS code of the goods — some codes retain a lower but non-zero rate. Confirm the current rate with your customs broker before building it into your landed cost.

Operating 8 automated filling lines in Zhongshan, our standard production lead time for 20ft / 40ft container contracts is 12 to 15 days. Transit time by sea freight from our local ports (Shenzhen / Nansha) is exceptionally fast across Southeast Asia: 3–5 days to Ho Chi Minh / Haiphong, 5–7 days to Bangkok, 7–9 days to Port Klang, and 10–12 days to Jakarta.

No. All PIROI neutral and acetoxy silicone sealants are classified and certified as Non-Hazardous Cargo (Non-Restricted Goods) by authorized marine safety testing bodies. They ship in general cargo ocean containers without requiring costly dangerous goods (DG) surcharges, specialized handling, or hazardous vessel bookings.

Our PR-999 Neutral Structural Silicone Sealant complies strictly with GB 16776-2025 (Chinese National Structural Standard) and is listed as No. 94 in the official 2026 Annual Qualified Catalogue by the China Building Metal Structure Association. Additionally, our formulations are tested against ASTM C920 (Class 25/50) and GB/T 14683, with RoHS and REACH reports available for electronics and home appliances.

Yes. We actively assist our exclusive country distributors with localized compliance filings: Vietnam TCVN, Malaysia SIRIM, Indonesia SNI, and Thailand TIS. Our engineering office provides full ingredient declarations, factory ISO 9001:2015 quality audit transcripts, mill test sheets, and un-redacted lab test data packages required by local testing institutes.

Every single batch produced at our Zhongshan plant undergoes retained sample archiving for 18 months alongside an individual Certificate of Analysis (COA). If any confirmed viscosity, curing, or adhesion defect occurs due to factory formulation error, PIROI guarantees 100% free cargo replacement or immediate commercial credit against your account.