Injection Molding Workshop Tour – Precision Plastic Parts Manufacturing

Inside Our Injection Molding Workshop – Precision Plastic Parts Manufacturing

Welcome to Shenzhen Runpeng Precision Hardware Co., Ltd. In this video, we take you inside our injection molding workshop at our Dongguan production base. With advanced injection molding machines and in-house mold-making capability, we deliver high-precision plastic components for door and window hardware, consumer electronics, automotive accessories and more.

 Our Injection Molding Capabilities

Our injection molding line is equipped to handle projects from prototype to mass production with consistent quality:

• Precision injection molding – shot sizes from small micro parts to large components, with tight tolerances
• Insert molding & overmolding – combining plastic with metal inserts for door hardware and handle components
• In-house mold design & tooling – mold flow analysis, CNC mold machining, EDM and mold trial all under one roof
• Wide material range – ABS, PP, PA (nylon), PC, POM, PMMA, PE, HDPE, TPE, TPU and glass-fiber reinforced resins
• Color matching & surface finishing – custom Pantone colors, texture, gloss, silk-screen printing and ultrasonic welding
• 100% quality inspection – dimensional checking, visual inspection and assembly testing on every batch

 We Also Specialize in Die Casting

Beyond injection molding, Runpeng is also a specialist in zinc alloy and aluminum die casting. Our high-pressure die casting machines produce durable metal components such as door hinges, handles, rosettes, push bar fittings and decorative hardware – which can then be combined with our injection-molded plastic parts and finished in-house for a true one-stop manufacturing solution. This vertical integration means tighter quality control, shorter lead times and better cost efficiency for our customers.

 Why Choose Runpeng as Your Manufacturing Partner?

Located in Shenzhen with our production base in Dongguan, China, Runpeng combines injection molding and die casting with CNC machining, stamping and surface treatment to offer complete OEM/ODM solutions. We serve customers across Europe, North America and beyond, with deep experience in:

• Door and window hardware – hinges, handles, lock covers, end caps, sealing profile accessories
• Metal + plastic hybrid parts – from die-casting, CNC machining and stamping to plastic overmolding and final assembly
• Surface treatment expertise – electroplating, anodizing, powder coating, polishing and more, all in-house or through certified partners
• Fast lead times – dedicated project engineers, automated production lines and strict on-time delivery
• Certified quality management – ISO-standard processes with full traceability from raw material to finished product

 From Idea to Production

Whether you need an injection molded part, a die-cast metal component, or a complete assembled product, our engineering team supports you at every step – from DFM (Design for Manufacturing) analysis, mold/tooling building and T1 sample approval, through to mass production, assembly and packaging.

— Shenzhen Runpeng Precision Hardware Co., Ltd.