We believe transparency is key to building trust, so we're happy to take you on a virtual tour of our production facility. Located in Guangdong, one of China's manufacturing hubs, our 12,000-square-meter factory is home to 80+ employees and 20 state-of-the-art injection molding machines.
The heart of our operation is our dust-free GMP compliant workshop. When you're producing caps for products that go on skin or near eyes, even the tiniest particle of dust can be a problem. That's why our workshop maintains a Class 100,000 cleanroom standard—air is filtered 12 times per hour, and all employees wear hairnets, gloves, and protective suits. Temperature and humidity are strictly controlled to prevent material warping, ensuring every cap comes out with consistent dimensions.
Our production process starts with raw material preparation. Plastic pellets are dried in dehumidifiers for 4-6 hours to remove moisture, which could cause bubbles or weak spots in the final product. Then, they're fed into injection molding machines, where they're melted at 220-250°C and injected into precision molds under high pressure. Each mold is calibrated to within 0.01mm tolerance—about the thickness of a human hair—to ensure every cap fits perfectly.
After molding, caps move to our assembly line, where automated machines attach the hinges and liners. We use a combination of mechanical and visual inspections here: sensors check for cracks or deformities, while human operators do random spot checks for hinge flexibility and seal integrity. Any caps that don't meet our standards are immediately recycled, never making it to the packaging stage.
Finally, caps are packaged in moisture-proof bags and sturdy cardboard boxes, ready for shipment. We work with reliable freight forwarders who specialize in B2B plastic container wholesale, offering both sea and air shipping options to meet your timeline. For urgent orders, we can even arrange express delivery to major cities like New York, London, or Sydney in as little as 5 days.
"What I love most about working with this factory is their attention to detail. During a video call, they walked me through their quality control process, showing me how each cap is tested for leakage and durability. It's rare to find a supplier that's this open about their operations." — Sarah, Product Manager at a US-based cosmetics brand