Founded in 2012 in Jimo District, Qingdao, Qian'ao is built on precision mold component manufacturing technology. We provide end-to-end capability covering precision mold design and making, precision part machining, plastic injection molding and precision inspection, serving the relay and connector fields for many years as a stable partner of Chinese and Japanese companies.
Centered on precision mold component technology, covering the full chain of mold, parts, molding and inspection.
EDM, wire-cut, grinding, milling and engraving combined; grinding accuracy up to ±0.001 mm.
Products →From spec definition of customer drawings to mold design and making since 2012.
Products →25 FANUC / Sumitomo injection machines and 25 robots, clamping force 30–100t.
Products →Dedicated relay cleanroom with exclusive lines and inspection room ensuring high cleanliness and consistency.
Products →Dedicated connector line and halogen-free line in parallel for flexible small-batch, multi-variety delivery.
Products →Tool microscopes, vision measuring systems and height gauges; accuracy ±0.001 mm with full traceability.
Products →Okamoto and Hengxin high-precision grinders achieve a stable ±0.001 mm on surface and form grinding.
Products →Sodick AD-series precision EDMs deliver electrode and EDM forming accuracy of ±0.003 mm.
Products →Based on precision mold component technology, a closed-loop process from product drawing and mold design to part machining, molding and quality management.
Our precision mold components and molded parts are widely used in relays, connectors and automotive electronics where reliability matters most.
Precision relay plastic parts from a dedicated cleanroom line.
Electronic plastic parts from a dedicated connector line.
IATF 16949 qualified for automotive applications.
Precision mold components for Chinese and Japanese customers.
We officially obtained IATF 16949:2016 automotive quality management system certification, enabling automotive electronic component support.
Read more →Core processes such as EDM, wire-cut and grinding were upgraded, further improving accuracy and lead time.
Read more →The cleanroom and dedicated inspection room deliver high-cleanliness, high-consistency mass production of relay plastic parts.
Read more →Committed to delivering high-quality, technically competitive and cost-effective precision mold and molding solutions.