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     To differentiate the quality of brass welding rods, you can evaluate them based on the following aspects:        1. Composition and Alloy Proportions       Chemical Composition: High-quality brass welding rods generally contain stable proportions of copper, zinc, and small amounts of other alloy elements like lead, tin, etc. The proportion of these elements affects the rod's strength, corrosion resistance, and flowability.       Standard Certification: Check whether the welding rod adheres to industry standards (such as AWS, ISO) and ensure the composition complies with these specifications.         2. Surface Quality       No Rust, Contamination, or Defects: The surface of a high-quality rod should be smooth and clean, without obvious oxidation or contamination.       No Cracks or Defects: The rod should maintain an even diameter, free of cracks, dents, or other noticeable defects.         3. Welding Performance       Flowability: A good brass welding rod should flow easily during welding, filling the weld seam and creating a uniform weld joint.       Ease of Welding: High-quality rods can melt at a lower temperature and bond well with the base metal without forming cracks, porosity, or other welding defects.         4. Corrosion Resistance       Oxidation Resistance: A high-quality brass welding rod exhibits strong resistance to oxidation, ensuring that the weld remains intact and does not corrode easily after welding.         5. Elasticity and Strength       Strength Tests: You can perform tensile and bending tests on the welded sample to verify the strength and toughness of the weld joint.       High-Temperature Resistance: Quality brass rods should maintain structural strength at high temperatures without deforming or losing bonding strength.         6. Brand and Supplier       Reputable Brands: Choosing well-known brands typically guarantees the quality of the rods. Established brands usually have stricter quality control standards and provide after-sales support.       Supplier Certification: Opt for certified suppliers (e.g., ISO-certified manufacturers) to minimize the risk of receiving low-quality rods.         7. Packaging and Storage Conditions       Packaging: High-quality rods should be packaged to prevent moisture and contamination, typically in sealed packaging or plastic tubes.       Storage Conditions: The welding rods should be stored in dry, corrosion-free environments to avoid deterioration due to environmental factors.         By considering these factors, you can effectively judge the quality of brass welding rods, ensuring better welding performance and d...

      We’re excited to kick off the year with a fresh start! As we get back to work today, we want to thank our partners and customers for your continued support. At Xinxin Welding, we specialize in high-quality brazing rods designed to meet all your welding needs.      Here’s to a successful year ahead, filled with new opportunities and strong partnerships. Let’s make 2026 our best year yet!      Feel free to reach out to us for any product inquiries or to discuss how we can support your projects this year.      Cheers to new beginnings and great welding!      Best regards,      The Xinxin Welding Team

  XINXIN WELDING wishes you and your team a merry Christmas and a successful new year ahead. May the holiday season bring you well-deserved rest and renewed energy

      On December 23, 2025, copper prices surged to record highs (approaching $12,000/ton on the LME) driven by a severe global supply crunch from mine disruptions (like Indonesia's) and increased demand for AI/data centers, with US stockpiling adding to the squeeze, while a weaker dollar also bolstered the metal, though uncertainty remains about the long-term trend if Fed policy tightens.        Key Drivers for the Increase:       Supply Shortages: Major mine outages, particularly at the world's second-largest mine in Indonesia, have significantly reduced copper ore supply.       AI & Data Centers: The boom in Artificial Intelligence requires massive amounts of copper wiring for data centers, increasing demand.       US Stockpiling & Tariffs: Anticipation of potential US tariffs has led to heavy stockpiling in the US, further tightening global supplies.       Weakening Dollar: A declining US dollar makes dollar-denominated commodities like copper cheaper for holders of other currencies, pushing prices up.       Low Processing Fees: Record low (even zero) processing fees for smelters are forcing some to cut production, adding to refined copper scarcity.        Market Sentiment:       Analysts are bullish, with predictions of further price increases into 2026, potentially hitting $12,000-$13,000/ton or more, as a significant refined copper deficit is expected.        Context:       Copper futures on the London Metal Exchange (LME) topped $12,000 per ton for the first time on this date, marking nearly a 40% price surge since the end of 2024.

Executive Summary       As 2025 draws to a close, copper prices are exhibiting a phase of consolidation with a cautiously bullish bias. Trading within a defined range, the market is balancing persistent long-term structural tailwinds against near-term macroeconomic headwinds and seasonal softness. The prevailing price direction is being dictated by the ongoing tension between tangible supply-demand fundamentals and financial market sentiment. Current Price Context & Market Sentiment       Entering December, LME 3-month copper is hovering around **$9,800 - $10,200 per tonne**. This represents a stabilization following the volatility seen earlier in Q4. Market sentiment is cautiously optimistic but tempered by year-end risk reduction. Investors are largely positioned for the long-term energy transition story but remain acutely sensitive to data prints on global growth, particularly from China. The typical year-end liquidity drain and book-squaring by funds are contributing to slightly subdued trading volumes and range-bound action. Key Bullish Drivers       1. Tight Physical Supply:The market continues to grapple with structural underinvestment in major new mine projects. Persistent operational disruptions at key mines in Latin America and Africa, coupled with declining head grades at aging operations, have constrained concentrate supply. Global visible exchange inventories (LME, SHFE, COMEX) remain at historically low levels, providing a fundamental floor for prices.       2. The Energy Transition Megatrend:Demand from green sectors remains the core bullish narrative. Robust growth in electric vehicle (EV) production, grid expansion for renewables, and investments in related infrastructure (charging networks, wind/solar farms) continue to translate into incremental copper demand. This secular trend is viewed as non-negotiable, underpinning long-term price support.       3. Policy Support:Major economies continue to roll out fiscal packages targeting infrastructure and clean energy manufacturing. While implementation timelines vary, these commitments provide forward demand visibility and limit downside risk. Key Bearish Pressures & Risks       1. Macroeconomic Uncertainty:** The primary headwind remains the trajectory of major Western economies. While a soft landing scenario is gaining traction, high interest rates and restrictive monetary policy in the US and EU continue to suppress demand in traditional sectors like construction and conventional automotive. A stronger US Dollar, often a feature of year-end flows, also exerts pressure on dollar-denominated metals.       2. China's Demand Conundrum:Chinese demand remains the critical swing factor. While green sector demand is healthy, the ongoing property market downturn continues to be a significant drag on overall copper consumption. Government stimulus measures have provided stability...

Important Notice on Copper Prices           Dear customer, the copper price is still rising continuously every day and there is no sign of a decline. Please adjust your stock sales prices.          LME Copper prices increased today, December 8, 2025, closing at $11,620.5 per ton, a1.97% increase from the previous day's close of $11,400. The increase was driven bycontinued concerns about global supply shortages.        Previous day's close: $11.400        Today's close: $11.6120.5        Day's range: $11,620.5 -$11.645        Key driver: Fears of a global supply crunch are pushing prices higher.

  Important Notice on Copper Prices           Dear customer, copper prices have skyrocketed. Please adjust your stock sales prices. It is expected that copper prices will not fall in the short term         LME Copper prices increased today, December 3, 2025, closing at $11,453 per ton, a3.06% increase from the previous day's close of $11,145. The increase was driven bycontinued concerns about global supply shortages.        Previous day's close: $11.145        Today's close: $11.453        Day's range: $11,180 -$11.485        Key driver: Fears of a global supply crunch are pushing prices higher. 

XINXIN QJ201 brazing flux is an aluminum-fluoride-based flux (mainly KAlF₄) designed for non-corrosive, high-temperature brazing of aluminum and aluminum alloys.   Its principal uses are:      1. Oxide Removal & Wetting Aid – Chemically dissolves the tenacious Al₂O₃ film that forms on aluminum surfaces, allowing the filler alloy to wet and flow freely at 560–585 °C .       2. Oxidation Protection – Forms a thin molten layer that shields the joint from re-oxidation during heating, ensuring sound metallurgical bonding .       3. Process Versatility – Compatible with flame, furnace, induction, and automatic dispenser systems; supplied as a dry powder that can be brushed, dipped, or sprayed (after suspension in alcohol or water) .       4. Post-Braze Cleanliness – Leaves minimal, largely water-soluble residue, so components used in HVAC, automotive coolers, and electrical enclosures require only simple hot-water rinsing .       5. Industry Applications– Routinely used when brazing aluminum evaporators/condensers, intercoolers, battery cooling plates, and lightweight structural parts where corrosion resistance and joint integrity are critical .In short, QJ201 flux enables reliable, oxide-free, cosmetically clean joints in aluminum assemblies across automotive, refrigeration, and electronics industries.