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Specialized in PE, PVC, TPE, TPU and Low Smoke Zero Halogen (LSZH) wire and cable compound and materials.
In high-rise buildings, subway tunnels, new energy power stations and industrial complex scenarios, the fire safety of wires and cables is directly related to life and property and system reliability.
YINSU Flame Retardant Company provides customized flame retardant solutions for global customers, covering PE (polyethylene), PVC (polyvinyl chloride), TPE (thermoplastic elastomer), TPU (thermoplastic polyurethane) and LSZH (low smoke and halogen free) wire and cable systems to meet all safety requirements, ranging from UL94 V-0 flame retardant certification to EN 45545 fire protection for rail transportation and IEC 60754 low smoke and halogen free toxicity. All-round safety requirements.
Material Common Use Typical FR Type YINSU Flame Retardant Item No.
PE HDPE, LDPE, LLDPE, Red phosphorus, halogen free FR, PRP-950X, PE-XT-20, B-HFFR, MCA-B, WADP-10
Cross-linked PE cables, Bromine antimony masterbatch FR-ML-01, K100
Plastic insulated cables.
PVC PVC &Plastic insulated power cables, ATO alternatives T3, T30, FRP-950X, K100, ZHS, ZS, ZSB-A
Aluminum stranded wires, Zinc stannate
Prefabricated branch cables.
TPE Insulated wires, flexible cables Organic phosphorus MCA-B, WADP-10, FRP-950X, 95-MC
Shielded insulated cables
TPU Special purpose cables Organic phosphorus MCA-B, WADP-10, FRP-950X, 95-MC
Power cables for frequency converters.
Others Welcome to consult more details.
Antimony prices remain stuck at high levels, with antimony trioxide holding steady at 95,000–98,000 yuan per metric ton, while bromine has risen in tandem to 37,000–37,500 yuan per metric ton, keeping cost pressures on flame retardants high. Zimbabwe’s export ban has exacerbated supply disruptions, and with downstream demand remaining weak, the market is caught between rising and falling prices. This has further opened the window for evaluating antimony-free alternatives.
Sulfur prices have surged 187% year-over-year, with solid sulfur in East China rising from 2,394 yuan per metric ton in 2025 to 6,871 yuan per metric ton in 2026. This week, the mainstream granular sulfur price at Chinese ports stood at 8,750 yuan per metric ton, down 300 yuan per metric ton from last week—a 3.31% decline. Nationwide port inventories stand at 878,400 metric tons. Although this represents a 5.25% increase from the previous week, it remains more than 63% lower year-over-year and is at a near-decade low. The global supply shortfall is approximately 5.13 million metric tons, with imports far below normal levels. Prices for phosphorus-based flame retardants, such as red phosphorus and ammonium polyphosphate, are prone to rise but not fall due to cost pass-through from sulfur. Coupled with successive price increases for bromine and antimony, the overall cost pressure on the flame retardant industry continues to climb.
When it comes to flame retardancy in thin-walled parts, adding too much reduces flow and prevents proper filling, while adding too little fails to meet V0 standards. How can we solve this dilemma? By combining phosphorus-based synergists with ultra-fine particles, we can reliably pass the V0 test even at low loading levels—while actually maintaining flow and impact strength. Don’t just pile on the additives; the key lies in proper formulation.
When modifying high-temperature nylon and PBT for flame retardancy—where processing temperatures frequently reach 300°C—conventional halogen-free phosphorus-based flame retardants tend to decompose, cause mold fouling, and lead to yellowing as soon as they are introduced. However, after modifying the molecular structure and applying a coating, thermal stability has improved, mold fouling has decreased, and light-colored parts no longer risk discoloration.
Blooming issues often lie in the mismatch between formulation and processing. This article explains in depth — from mechanism to practical operation — how to match suitable red phosphorus flame retardants with processing conditions, so that anti-blooming performance no longer depends on luck.
Having trouble matching the right flame retardant? Whether it’s MCA agglomeration, ADP yellowing, or red phosphorus surface roughness — advanced coating technology can solve these problems, transforming off-the-shelf products into tailor-made solutions.
