About Shenzhen Jiarun Precision Science & Technology Co., Ltd. - Machined Components Supplier in China

China, Shenzhen hosts Shenzhen Jiarun Precision Science & Technology Co., Ltd., which currently lists eight active products in its catalogue. The catalogue covers motor stator and rotor assemblies for ceiling fans, hair dryers and DC motors, as well as a series of stamping dies and moulds for motor core production. One entry, a CNC‑machined auto parts mould, is recorded under HS code 8480.71 and is manufactured from tool‑steel grades such as H13 and P20. The remaining items are described without HS codes but fall within the same HS chapter for parts of machines (chapter 84). The product set therefore spans both finished motor components and the tooling required to produce them. The supplier groups these items under the top categories Agriculture, Machined Components and CNC Machines & Spare Parts, with the majority belonging to the Machined Components segment. The listed products include a professional stamping mould for cleaner motors, a progressive interlock stool for motor cores, progressive stamping dies for rotors and stators, and hot‑sale motor stator‑rotor sets for hair dryers. All items are positioned as replacement or OEM parts for small‑appliance electric motors. The catalogue does not provide additional technical specifications such as dimensions, tolerances or certifications.

Product Range and Specialties of Shenzhen Jiarun Precision Science & Technology Co., Ltd.

The catalogue lists specific motor‑core tooling and finished stator/rotor sets. The CNC‑machined auto parts mould (HS 8480.71) uses hardened alloy steels H13 or P20, which are standard for high‑temperature stamping dies and provide hardness levels around 45‑55 HRC after heat treatment. Typical industry tolerances for such moulds are ±0.05 mm on critical dimensions, surface roughness Ra 0.8 µm, and a hardness verification report. Stator and rotor assemblies for ceiling fans, hair dryers and DC motors are normally produced from copper windings, laminated silicon steel sheets, and aluminum or steel housings; common quality grades include IEC 60335‑2‑13 compliance for appliance motors. Stamping dies and progressive dies for rotor and stator production are usually offered in modular steel plates, with die life measured in millions of strokes and a recommended maintenance schedule. Buyers in this segment also look for material certification (e.g., ASTM A681 for tool steel) and dimensional inspection reports.

Trade and Export Information - Shenzhen Jiarun Precision Science & Technology Co., Ltd.

China is a major exporter of precision‑machined components and motor tooling, with shipments typically destined for Southeast Asian manufacturers, European appliance assemblers, and North American OEMs. The HS‑code family 8480 covers parts of machines of heading 84, and customs authorities in importing countries often require a commercial invoice, a certificate of origin, and, where applicable, an ISO 9001 or ISO/TS 16949 audit report. For motor stator‑rotor sets destined for the EU, CE marking and compliance with the Low Voltage Directive are commonly requested; US buyers frequently ask for UL certification or IEC‑60950 testing. Packaging usually involves wooden crates or reinforced cardboard boxes with internal foam inserts to protect the delicate windings, and freight is commonly arranged on 20‑ft or 40‑ft containers under FOB or CIF terms. Chinese export logistics for these items benefit from well‑developed port infrastructure in Shenzhen and nearby ports such as Yantian, enabling lead times of 15‑30 days to major ports in Europe and 10‑20 days to the United States.

Sourcing from Shenzhen Jiarun Precision Science & Technology Co., Ltd. - Buyer Guidance

When sourcing the CNC‑machined mould, request a mill test report (MTR) confirming the exact steel grade (H13 or P20), heat‑treatment condition, and hardness value. Dimensional drawings with tolerances and a first‑article inspection (FAI) report should be reviewed before confirming volume orders. For stator and rotor assemblies, ask for a winding resistance test, insulation resistance (IR) test, and a balance test report to verify run‑out specifications, typically expressed in grams‑cm. Verify that the supplier can provide material certificates for copper, aluminum and laminated steel, as well as any applicable CE or UL test reports if the goods will enter those markets. Clarify packaging details (crate dimensions, weight per crate) and confirm the Incoterm (e.g., FOB Shenzhen) to calculate freight costs accurately. Finally, establish the minimum order quantity (often one full crate or a batch of 500 units) and typical lead time (30‑45 days after receipt of a purchase order and sample approval).

What HS code applies to the CNC‑machined auto parts mould listed by the supplier?

The mould is recorded under HS code 8480.71, which covers parts of machines of heading 84, specifically tools for metalworking.

Which steel grades are used for the stamping dies and moulds?

The catalogue specifies tool steel / hardened alloy steel, commonly H13 or P20, both of which are standard for high‑temperature stamping applications.

What certifications should a buyer request for motor stator‑rotor sets intended for the EU market?

Buyers should request CE marking documentation, a test report confirming compliance with IEC 60335‑2‑13, and, if available, an ISO 9001 quality management certificate.

How can a buyer verify the dimensional accuracy of the CNC‑machined mould?

Ask the supplier for a mill test report and a first‑article inspection (FAI) report that detail critical dimensions, tolerances (typically ±0.05 mm), and surface roughness (Ra 0.8 µm).

What typical packaging is used for motor core components when shipped from Shenzhen?

Components are usually packed in reinforced cardboard boxes or wooden crates with internal foam or corrugated inserts, and the crates are palletized for container loading.

What are common lead times for the stator and rotor assemblies listed?

Lead times are generally 30‑45 days from order confirmation, assuming material certificates and sample approval are completed promptly.

Which markets most frequently import Chinese CNC‑machined motor tooling?

The primary import destinations are Southeast Asian manufacturers, European appliance assemblers, and North American OEMs.

What documentation is typically required for customs clearance of HS 8480.71 parts?

A commercial invoice, certificate of origin, and any applicable quality system certificates (e.g., ISO 9001) are normally required for customs clearance.