Hire DFA (Design for Assembly) Designers in China

Senior Mechanical Design Expert | 24 Years HVAC / Heat Pump / Industrial Heat Pump Experience Turn your HVAC or heat pump product from concept to mass production — efficiently, reliably, and certific... Read more

Senior Mechanical Design Expert | 24 Years HVAC / Heat Pump / Industrial Heat Pump Experience Turn your HVAC or heat pump product from concept to mass production — efficiently, reliably, and certification-ready. I have over 24 years of experience in mechanical structure design and product development in HVAC, heat pumps, and smart appliances. I have successfully led 200+ products from concept to mass production. My products are widely exported to Europe and North America, fully compliant with CE, UL, Keymark, TÜV, DVGW, UBA, KTW and other international standards, with strong experience in certification-oriented design. My Background Top-Tier Industry Experience: Worked at leading companies with mature product development systems: - Midea Group (Fortune Global 500) - A leading listed heat pump company - Chigo Air Conditioning (00449.HK) International Client Experience: Extensive experience working with global clients, providing customized product development: Carrier / Iceair / Thermondo / Kaisai / Olimpia / Notus / SKD Patents: - 1 National Priority Invention Patent - 12 Invention Patents - 100+ Utility Model Patents Core Expertise 1. HVAC / Heat Pump Structural Design - Full unit structure design (indoor / outdoor / integrated units) - Refrigeration system integration (compressor, heat exchangers, piping layout) - Noise reduction optimization (airflow vs noise balance) - Waterproofing, anti-vibration, piping stress & reliability design - Electrical enclosure safety & system integration 2. Industrial Heat Pump & HVAC Design - Industrial-grade heat pump system design - Industrial HVAC equipment (high reliability / long lifespan / harsh environments) - Custom non-standard equipment structure design 3. Manufacturing-Oriented Engineering (DFM / DFA) - Design for Manufacturing (DFM) - Design for Assembly (DFA) - Cost optimization - Mold feasibility analysis (plastic / sheet metal) Service Scope Heat Pump Products: Residential heat pumps (Monoblock / Split), modular systems, integrated water systems / hydraulic modules Air Conditioning & Light Commercial HVAC: Indoor / outdoor unit structure design, PTAC / window AC / portable AC, heat exchanger design (evaporator / condenser), electrical cabinet design Industrial & Custom Equipment: Industrial air conditioning, custom equipment structure design Additional Design Services: Sheet metal design, plastic part design, HVAC piping optimization, product upgrade & partial redesign Mold & Manufacturing Support: Mold design review (DFM), injection molding / sheet metal process optimization, supplier sourcing & factory coordination Cross-Functional Collaboration: Work with thermal engineers (refrigeration system optimization), work with electrical engineers (control system integration), support full system-level product development China-Based Engineering Support: Reliable supplier sourcing, on-site or remote production support, fast issue resolution during prototyping and mass production What I Need From You (Before Starting) To ensure an efficient project process, please provide as much as possible: 1. Basic Product Information: - System diagram / schematic - Sketch / concept / idea - Reference images or benchmark products 2. Certification & Market Requirements: - Target certifications (CE / UL / Keymark / TÜV, etc.) - Target market (Europe / North America, etc.) 3. Production Information: - Target production volume (prototype / small batch / mass production) - Whether you already have a factory or supply chain 4. Design & Manufacturing Preferences: - Material preference (plastic / sheet metal / hybrid) - Special requirements (cost target / appearance / size constraints, etc.) Even if you only have a rough idea or simple sketch, feel free to contact me. I can help you refine the concept and bring your product to life. My Commitment ✔ On-time delivery ✔ Design compliant with international standards (CE / UL, etc.) ✔ Production-ready, manufacturable design ✔ Free initial technical consultation ✔ Reliable and efficient communication

www,celalettintoprak,com I design real products that get manufactured - not just 3D models. Manufacturing-ready CAD, prototyping, and Design for Manufacturing (DFM)-driven product development for ind... Read more

www,celalettintoprak,com I design real products that get manufactured - not just 3D models. Manufacturing-ready CAD, prototyping, and Design for Manufacturing (DFM)-driven product development for industrial and consumer products. I’m an Engineer and Industrial Product Designer focused on manufacturing-driven product development. My background spans automotive, industrial, and consumer products, where I’ve worked as a Product Developer, Designer, and Technical Lead in production-oriented environments. I don’t approach projects as isolated design tasks. I approach them as systems that must survive prototyping, manufacturing, assembly, cost pressure, and real-world use. 📐 What You Can Expect Working With Me: - Clear, structured CAD suitable for iteration and production - Design decisions informed by manufacturing reality - Practical communication with engineers, suppliers, and manufacturers - Honest feasibility feedback (go / no-go when needed) - Designs meant to be tested, not just rendered 📐 Core Capabilities: - 3D CAD modeling (Siemens NX) - 2D technical drawings (AutoCAD Professional) - CNC, laser cutting, and sheet metal preparation - Injection molding–ready part design - Fixture, bracket, and assembly design - BOM creation and production planning support - Reverse engineering and scan-based modeling 📐 Injection Mold & Manufacturing Experience I have hands-on experience designing plastic injection molds and mold-ready parts, including projects for automotive and food-related products. ⚙️ I’m familiar with: - Injection molding–ready design, Core / cavity logic - Draft angles & wall thickness optimization - Parting lines and shut-off surfaces - Shrinkage and material behavior - Gate concepts (hot runner, valve gate) - Collaboration with mold makers and CNC shops - Design for Assembly (DFA), production validation - Engineering-driven product development - Long-term product roadmap support My focus is always on tool longevity, cycle time, surface quality, and cost efficiency. 📏 Typical Projects I Work On: - Automotive accessories and aftermarket products - Mechanically complex plastic or metal parts - Prototyping-heavy product development - Production validation before tooling - Redesigns for cost reduction or manufacturability - CAD clean-up and production conversion 📌 Primary CAD Tool: Siemens NX, AutoCAD and Geomagic Design X I work primarily in Siemens NX, which is widely used in high-end automotive and industrial manufacturing. I can deliver clean, fully editable STEP / STL / Parasolid files, and I regularly convert and work with SolidWorks, Fusion 360, Rhino, SketchUp, and scan-based data. If you use SolidWorks or another CAD system, this is not a limitation — deliverables are always production-ready and compatible. 📌 If you need more than a modeler—someone who understands how products are actually built and scaled—I can support your project from concept to production readiness.

I am a CATIA V5 and SOLIDWORKS mechanical engineer with 6 years of professional engineering experience and 7 years of unrelated project experience. I have proved myself capable of captaining a project... Read more

I am a CATIA V5 and SOLIDWORKS mechanical engineer with 6 years of professional engineering experience and 7 years of unrelated project experience. I have proved myself capable of captaining a project from concept to supply chain design and procurement strategy, and would love to do the same for you.