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Working principle and application of VOC: Volatile Organic Compounds(shared by Shandong Xiaoyuan Environmental Protection Technology Co., Ltd, website:https://www.gaslyst.com) I. Concept of VOCs VOCs (Volatile Organic Compounds) • Environmental Impacts: • Atmospheric photochemical reactions generate ozone and secondary particulate matter • Nerve damage, long-term exposure can cause cancer ⸻ II. Working Principle of VOC Ceramic Catalysts 1. Oxidation and decomposition of VOC gases into harmless substances: • CO₂ (carbon dioxide) • H₂O (water) • Core reaction: Oxidation reaction (usually between 250–450°C) VOC + O₂ → CO₂ + H₂O 2. Catalyst Composition 1. Support Material • Commonly used ceramic honeycomb support (cordierite or alumina ceramic) • Characteristics: • High specific surface area (beneficial for catalyst dispersion) • High thermal stability • Corrosion resistance 2. Coating/Active Components • Noble metal catalysts: • Mainly platinum (Pt) and palladium (Pd) • Pt, Pd, or a Pt/Pd combination can be selected according to the type of VOC. • Non-precious metal catalysts: • Active oxides, such as MnO₂, Co₃O₄, CuO • Functions: • Provides oxidation active sites, accelerating VOC decomposition • Reduces reaction temperature, improving conversion efficiency 3. Working Mechanism • Adsorption-Reaction-Desorption Mechanism: 1. VOC molecules are adsorbed on the catalyst surface. 2. Under the action of precious metals or active oxides, they undergo oxidation reactions with oxygen. 3. CO₂ and H₂O are desorbed from the catalyst surface. • Role of promoters/supports: • Ceramic provides high surface area and thermally stable structure. • Modifiable oxides (CeO₂, ZrO₂) can store oxygen, improving low-temperature oxidation capacity. ⸻III. Applications of VOC Ceramic Catalysts 1. Automobile exhaust treatment • 2. Industrial waste gas treatment • 3. 4. Chemical process exhaust gas • ⸻IV. VOC VOC conversion rate can reach over 90% High temperature resistance 600–800°C Low pressure drop honeycomb structure reduces exhaust gas drag and provides long lifespan. The noble metal catalyst is bonded to a stable support with a lifespan of 5–10 years. Customization is available, adjusting the Pt/Pd ratio or using non-noble metal formulations based on VOC type.

How to change the catalytic converter(shared by Shandong Xiaoyuan Environmental Protection Technology Co., Ltd, website: https://www.gaslyst.com） I. Preparations Before Replacement 1. Safety Tools and Equipment: • Jack and support frame • Socket wrench, open-end wrench, universal joint • Non-slip gloves, safety goggles • WD-40 or other lubricant (to prevent bolts from rusting) • New catalytic converter (model matching original) 2. Vehicle Preparation: • Park on a level surface • Engage the handbrake • Ensure the engine is completely cooled (catalytic converter temperature is very high, easily causing burns) • Disconnect the negative terminal of the battery to prevent accidental triggering of the oxygen sensor alarm 3. Spare Parts: • New catalytic converter • New gasket • If damaged, the oxygen sensor (O2 sensor) may need to be replaced. ⸻II. Replacement Steps 1. Locate the Catalytic Converter • The catalytic converter is usually located after the exhaust manifold and before the muffler. • In diesel vehicles, it may be before the DOC and DPF. • Note the oxygen sensors before and after the catalytic converter; they need to be removed during replacement. 2. Remove the Oxygen Sensor • Use an O2 sensor socket or open-end wrench to unscrew it counterclockwise. • Be careful not to damage the sensor wiring harness. 3. Loosen the catalytic converter mounting bolts. • The catalytic converter is usually fixed to the exhaust pipe with flange bolts. • Spray lubricant on rusted bolts and wait 5–10 minutes. • Use a socket wrench to loosen slowly, do not use excessive force to avoid breakage. 4. Remove the old catalytic converter. • Remove it gently, being careful not to damage the exhaust pipe and suspension bracket. • Check if the flange sealing surface is flat; repair any corrosion or deformation. 5. Install the new catalytic converter. 1. Install the new gasket (ensure alignment). 2. Install the new catalytic converter, first hand-tightening the mounting bolts to ensure correct positioning. 3. Then use a wrench to tighten evenly, avoiding overtightening to prevent flange deformation. 6. Reinstall the oxygen sensor. • Use an O2 sensor socket wrench to screw it back on with moderate torque. • Be careful not to twist the sensor wiring harness or allow it to come into contact with high-temperature components. 7. Check. • Confirm that the catalytic converter is securely fixed and the oxygen sensor connection is normal. • There are no obvious gaps in the exhaust pipe. • Reconnect the battery negative terminal. ⸻III. Precautions 1. Avoid high-temperature operation: The catalytic converter's temperature can reach 400–600°C immediately after engine shutdown. 2. Ensure model compatibility: Different vehicle models have different catalytic converter apertures, lengths, and oxygen sensor interfaces. 3. Environmental requirements: Removed catalytic converters contain precious metals and should be recycled according to local regulations. 4. Engine fault codes (MIL): • After replacement, P0420 or similar codes may appear, requiring clearing the fault codes or waiting for self-learning. 5. Do not forcefully strike: The ceramic inside the old catalytic converter is fragile; avoid allowing fragments to enter the exhaust pipe. 6. Torque requirements: • Flange bolts are generally recommended at 20–40 Nm (depending on the vehicle model). • Oxygen sensor torque is generally 30–40 Nm. ⸻ Tips: • If the catalytic converter is only partially blocked, you can try cleaning or high-temperature regeneration first, but severe blockage still requires replacement. • For diesel vehicles, note that the catalytic converter after the DPF (DOC) and the oxidation catalytic converter are usually replaced or inspected together to ensure regeneration efficiency.

Shandong Xiaoyuan Environmental Protection Technology Co., Ltd(website: https://www.gaslyst.com). Specializing in Catalyst carrier, metal catalyst carrier, Three-Way Catalytic Converter, Three-Way Catalytic Converter Universal Package, Three-Way Catalytic Converter Ceramic Carrier, Automotive Ceramic Core Carrier,Truck Ceramic Inner Core Carrier, Metal Iron Core Inner Core Carrier, Automotive Emission Specific Products. We are specializing in manufacturing honeycomb ceramic catalyst carriers of various sizes, metal carriers, universal three-way catalytic converters, and universal kits for three-way catalytic converters, including catalysts meeting high standards such as Euro 1, Euro 2, Euro 3, Euro 4, Euro 5, and Euro 6. OEM and ODM available. Shandong Xiao yuan Environmental Protection Technology Co. is committed to becoming a leading company in China's environmental protection technology sector, promoting the development and application of green environmental protection technologies, contributing to the sustainable improvement of the ecological environment, and creating a cleaner and better future for society.

Shandong Xiaoyuan Environmental Protection Technology Co., Ltd(website: https://www.gaslyst.com). Specializing in Catalyst carrier, metal catalyst carrier, Three-Way Catalytic Converter, Three-Way Catalytic Converter Universal Package, Three-Way Catalytic Converter Ceramic Carrier, Automotive Ceramic Core Carrier, Truck Ceramic Inner Core Carrier, Metal Iron Core Inner Core Carrier, Automotive Emission Specific Products

Shandong Xiaoyuan Environmental Protection Technology Co., Ltd. Specializing in Catalyst carrier, metal catalyst carrier, Three-Way Catalytic Converter, Three-Way Catalytic Converter Universal Package, Three-Way Catalytic Converter Ceramic Carrier, Automotive Ceramic Core Carrier,Truck Ceramic Inner Core Carrier, Metal Iron Core Inner Core Carrier, Automotive Emission Specific Products.(https://gaslyst.com) Honeycomb ceramic catalyst carriers have a wide range of applications, primarily including the following: 1. Automotive Exhaust Purification • Serves as the core component of three-way catalytic converters. • Catalytically oxidizes and reduces harmful gases such as CO, HC, and NOₓ, achieving environmental emission standards. 2. Industrial Waste Gas Treatment • Treats pollutants such as VOCs (volatile organic compounds), NOₓ, and CO generated in industry. • Used in waste gas purification systems for the chemical, coating, pharmaceutical, and electronics industries. 3. Denitrification (SCR) Systems • Utilizes selective catalytic reduction (SCR) technology in coal-fired power plants, cement plants, and boilers to remove nitrogen oxides. • Typically carries active components such as V₂O₅–WO₃/TiO₂. 4. Municipal Waste Incineration Flue Gas Purification • Used for high-temperature flue gas purification and dioxin emission control. 5. Chemical Catalytic Reaction Supports • Catalyst supports used in industrial reactions such as ammonia synthesis, methanol to olefins (MTO), and alkane dehydrogenation.

Shandong Xiao Yuan Environmental Protection Technology Co.,ltd is located in the Green Kinetic Energy Industrial Park in Guanchang Town, Ningjin County, Dezhou City, Shandong Province, with a factory area of 5,000 square meters. primarily produce honeycomb ceramic catalyst carriers of various sizes, metal carriers, universal three-way catalytic converters, and universal kits for three-way catalytic converters, including catalysts meeting high standards such as Euro 1, Euro 2, Euro 3, Euro 4, Euro 5, and Euro 6. We support customization to meet your specific requirements and accept small batch orders for product testing. We guarantee the quality and durability of our products. Shandong Xiao ryan Environmental Protection Technology Co. is committed to becoming a leading company in China's environmental protection technology sector, promoting the development and application of green environmental protection technologies, contributing to the sustainable improvement of the ecological environment, and creating a cleaner and better future for society. please find more information at: www.gaslyst.com

Shandong Xiaoyuan Environmental Protection Technology Co., Ltd. is committed to becoming a leading company in China's environmental protection technology sector.We promote the development and application of green environmental protection technologies, contribute to the sustainable improvement of the ecological environment, and create a cleaner and better future for society.

Wenzhou Legend Lock Co., Ltd. is a company specializing in manufacturing various types of automobile anti-theft locks. Its products include steering wheel locks, pedal locks, wheel clamps, gear lever locks, and multi-function steering wheel and pedal locks. In addition, we also produce a variety of locks such as motorcycle and bicycle locks, door locks, etc. The company was established in 2006, but we have more than 15 years of rich experience in the field of lock production.

Longkou lihe machinery will attend 2025 Automechanika Mexico--(7.16--7.18), welcome to participate this Autoparts show.( To find More auto parts manufacturers, you can link to ABIZTIME) Name: Automechanika Mexico Site: Mexico Date: 7.16-18 Booth: 4148 Products: Brake disc, brake drum

Longkou lihe Machinery(RDBRAKE) will attend Autopromotec in Bologna, Italy from May 21 to 24. Welcome to visit our booth. Name: Autopromotec(International Exhibition of Automotive Equipment and Aftermarket Products) Site: Bologna, Italy Date: 5.21-24 Booth: J15, Hall 18 Products: Brake disc, brake drum Welcome to the booth to meet the top brake disc manufacturer in China.

Longkou Lihe Machinery Parts Co., LTD(www.rdbrake.com) attended the AUTOMEC 2025 in Sao Paulo, Brazil. Booth No.: D275 Welcome the powerful auto parts buyers and importers to visit the booth.

2025 Longkou lihe machinery parts co.,ltd (rdbrake.com) global exhibition schedule. 4.22-26, Sao Paulo. Booth: D275 at AUTOMEC EXHIBITON BRAZIL. 5.21-24.5 at Autopromotec in Italy. Welcome to visit the booth.

Various Types of Bearing Brake Disc(source from :rdbrake.com) The primary function of bearing brake discs is to provide a stable and reliable surface for the brake pads to grip, thereby facilitating effective braking. When the brake pedal is pressed, the brake pads clamp onto the spinning brake disc, generating friction that slows down the wheel's rotation. The bearings within the brake disc assembly ensure smooth and consistent rotation, minimizing wear and tear on the braking system. Types of Bearing Brake Discs Ventilated Brake Discs: These discs feature internal vanes or vents that allow air to circulate, dissipating heat more efficiently. They are commonly used in high-performance vehicles and heavy-duty applications where heat management is crucial. Solid Brake Discs: These are simple, flat discs without internal vents. They are typically used in smaller or lighter vehicles where excessive heat build-up is less of a concern. Drilled and Slotted Discs: These discs have holes and grooves that enhance heat dissipation and improve braking performance, especially under extreme conditions. They also help in expelling dust and debris from the braking surface. Composite Brake Discs: Made from a combination of materials such as cast iron and carbon composites, these discs offer superior performance, reduced weight, and enhanced heat resistance. They are often found in high-end sports cars and racing applications. Maintenance of Bearing Brake Discs Regular maintenance of bearing brake discs is essential to ensure the longevity and reliability of the braking system. Key maintenance practices include: Inspection: Regularly inspect the brake discs for signs of wear, such as grooves, cracks, or uneven surfaces. This can prevent potential brake failure. Cleaning: Keep the brake discs clean from dust, dirt, and debris. Use appropriate cleaning solutions and tools to avoid damaging the surface. Lubrication: Ensure that the bearings are properly lubricated to reduce friction and prevent overheating. Use the recommended type and amount of lubricant for optimal performance. Replacement: Replace the brake discs when they show significant signs of wear or when they reach the manufacturer's recommended lifespan. Timely replacement can prevent more severe damage to the braking system.

Various Packaging way of Brake Discs( from RDBRAKE.COM) In the automotive parts industry, as the key safety components, the packaging design of brake discs is not only related to the product's market image, but also directly affects consumers' purchasing decisions. 1. Plastic bag Generally, brake discs are first packed in a plastic bag. The plastic bag will be sealed as customers' requirement. 2. Neutral white box and kraft paper box: low cost. 3. Neutral colorful box for brake discs 4, Colorful pizza box for brake discs 5, Pallet

2024 Automechanika Shanghai Wraps Up Successfully Recently, Longkou Lihe Machinery Parts Co., Ltd(RDBRAKE.COM). successfully participated in the 2024 Automechanika Shanghai. During the exhibition, we showcased our key products, including automotive brake discs, brake drums, and performance brake discs and drums for modified vehicles, attracting a large number of visitors and inquiries. During the event, we engaged with customers and partners from various countries and regions around the world. Through in-depth, face-to-face interactions, we not only strengthened relationships with existing customers but also identified numerous potential cooperation opportunities, laying a solid foundation for future market expansion. The exhibition was highly fruitful for us. Moving forward, we will take this success as an opportunity to continue innovating and to develop high-quality products that better meet market demands, creating greater value for our customers. We extend our heartfelt gratitude to all the customers, partners, and industry peers who visited our booth. We look forward to meeting you again at future industry events and working together to drive the sustainable growth of the automotive parts industry!