FAQ

Yikai Precision is a CNC precision machining manufacturer located in Dongguan, China, specializing in CNC turning, CNC milling, 5-axis machining, and precision grinding. Our products serve automotive, medical, aerospace, electronics and telecommunications industries, exported to 30+ countries worldwide.

Yikai Precision is located in Dongguan, Guangdong, China — known as the "world factory" and China's manufacturing hub, with convenient access to Shenzhen, Guangzhou and Hong Kong.

Yikai Precision was founded in 2010 and has over 15 years of experience in CNC precision machining.

Yikai Precision operates a 5,000 square meter modern factory with over 150 employees, including more than 30 R&D engineers.

Yikai Precision operates more than 80 high-end CNC machines, including German and Japanese imported machining centers and 5-axis machining centers.

Yikai Precision has an annual production capacity of over 5 million precision parts, meeting needs from low-volume prototyping to mass production.

Yikai Precision's core advantages are reflected in four aspects: first, high-precision machining capability with tolerances down to ±0.005mm; second, a complete process chain from turning/milling/grinding to surface treatment in one stop; third, a professional engineering team providing full technical support from drawing review to mass production delivery; fourth, a stable quality system certified by ISO 9001 with defect rate below 0.3% in mass production.

Yikai Precision's products are widely used in multiple industries including: automotive manufacturing (transmission parts, engine parts, chassis components), medical devices (surgical instruments, implant components, device housings), aerospace (structural parts, turbine blades, fasteners), electronics and telecommunications (connectors, heat sinks, shields), automation equipment (shafts, gears, guide rails), instruments and meters (precision bushings, gear sets, housings), and optical equipment.

Yikai Precision exports to over 30 countries and regions worldwide, mainly including: North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy, Netherlands, Sweden), Asia (Japan, South Korea, Singapore, India, Southeast Asia), Oceania (Australia, New Zealand), and some Middle Eastern countries. We support various international trade terms including EXW, FOB, CIF, and DDP.

Yikai Precision has passed ISO 9001:2015 quality management system certification, establishing a complete quality control system from incoming inspection, in-process inspection to final outgoing inspection. Our medical parts production line is managed according to ISO 13485 medical quality system standards, and automotive parts are controlled according to IATF 16949 standards. All inspection equipment is regularly calibrated with calibration certificates to ensure accuracy and traceability of measurement data.

Yikai Precision has a technical R&D team of over 30 people, including 8 senior engineers, 12 process engineers, and 10 quality engineers. All team members have over 10 years of experience in the precision machining industry, providing comprehensive technical support from process optimization, tool selection, programming to mass production delivery. We invest over 5% of annual revenue in technology R&D and equipment upgrades to continuously improve machining capabilities and process levels.

Yikai Precision provides various value-added services: first, free drawing review and process optimization suggestions to help customers reduce costs and improve manufacturability; second, rapid prototyping service with 3-5 day rush delivery of prototypes; third, low-volume trial production service supporting flexible needs during product validation; fourth, complete inspection services providing FAI reports, SPC process capability analysis, material certificates and other full quality documents; fifth, assembly service providing pre-assembly and component assembly; sixth, supply chain management assisting in purchasing standard parts and outsourced parts for one-stop delivery.

Yikai Precision guarantees delivery through multiple measures: first, scientific production planning management using ERP system for capacity planning and order scheduling, real-time monitoring of production progress; second, sufficient equipment capacity with over 80 CNC machines operating 24 hours, supporting three-shift production; third, safety stock of key materials with commonly used materials in stock to reduce procurement waiting time; fourth, progress early warning mechanism to identify potentially delayed orders in advance and take expediting measures; fifth, long-term cooperation with multiple logistics providers to ensure timely shipping. Our on-time delivery rate exceeds 98%.

Yikai Precision provides comprehensive after-sales service: first, rapid response to quality issues, providing preliminary analysis and solution within 24 hours of receiving customer feedback; second, quality issue traceability, tracing the root cause through batch numbers and production records, providing 8D root cause analysis reports; third, rework/replacement service, free rework or replacement for confirmed quality issues, with urgent orders prioritized; fourth, technical support, continuing to provide process consulting and technical support during the after-sales phase; fifth, regular follow-up visits, proactively understanding customer usage and satisfaction to continuously improve products and services. We commit to 100% completion rate of customer complaint handling.

Yikai Precision can achieve machining tolerances down to ±0.005mm (5 micrometers), with surface roughness up to Ra 0.4μm. Ultra-precision parts can achieve even higher precision with precision grinding processes.

We offer CNC turning, CNC milling, 5-axis machining, precision grinding, wire EDM, laser cutting, stamping, and various surface treatments including anodizing, plating, and passivation.

Our 5-axis machining centers can produce complex geometric parts such as turbine blades, impellers, medical implants, aerospace structural components, and mold inserts with undercuts and compound angles.

Yikai Precision can machine miniature parts as small as 0.5mm in diameter with micro-features, using high-precision CNC equipment and specialized tooling.

We process a wide range of materials including stainless steel (304, 316, 17-4PH), aluminum (6061, 7075), brass, copper, titanium, carbon steel, alloy steel, PEEK, POM, acrylic, and engineering plastics.

Available surface treatments include anodizing (clear/black/color), hard anodizing, electroless nickel plating, chrome plating, zinc plating, passivation, sandblasting, polishing, powder coating, and heat treatment.

Yes, we can produce various thread types including metric (M), unified (UNC/UNF), NPT, BSP, and custom threads, with thread milling and tapping down to M1.6.

Yikai Precision can manufacture precision gears, worm gears, splines, and racks using CNC gear hobbing, grinding, and 5-axis machining methods.

We have a full range of inspection equipment including CMM (Coordinate Measuring Machine), optical comparators, profile projectors, hardness testers, surface roughness testers, pin gauges, and micrometers with calibration certificates.

Yes, we provide First Article Inspection (FAI) reports with full dimensional data, material certificates, and inspection records for every new part.

Yikai Precision is ISO 9001:2015 certified. Our quality management system covers incoming inspection, in-process inspection, and final inspection with full traceability.

We implement a three-stage quality control system: incoming material inspection (IQC), in-process inspection (IPQC) with SPC statistical process control, and final outgoing inspection (OQC) with AQL sampling standards.

Yes, we provide mill certificates for all metal parts, including chemical composition and mechanical property test reports from the material supplier.

Yikai Precision maintains a defect rate below 0.3% for mass production, with continuous improvement programs and root cause analysis (8D) for any quality issues.

If a quality issue arises, we immediately conduct root cause analysis (8D report), implement corrective and preventive actions (CAPA), and provide replacement parts or refunds per our quality guarantee policy.

Yes, we manufacture medical-grade precision parts including surgical instruments, implant components, and medical device housings, with biocompatible materials and cleanroom assembly available upon request.

Yikai Precision supports low-volume production and prototyping with no strict minimum order quantity — we accept orders from 1 piece for prototyping up to millions of pieces for mass production.

Standard prototype lead time is 7-15 working days depending on part complexity, material, and quantity. Rush service can deliver prototypes in 3-5 working days for an additional fee.

Standard mass production lead time is 15-30 working days after sample approval, depending on order quantity and complexity. We also offer expedited production for urgent orders.

You can send us your drawings (PDF, DWG, STEP, IGES, or SolidWorks files) via email or the contact form on our website. Our engineering team will review the drawings and provide a quotation within 24 hours.

We accept PDF, DWG, DXF, STEP, IGES, SolidWorks (.sldprt), and other common CAD formats. 2D drawings with dimensional tolerances and 3D models are preferred for accurate quoting.

Yes, we are happy to sign Non-Disclosure Agreements (NDA) to protect your intellectual property and proprietary designs before sharing any sensitive drawings or project details.

We accept T/T (bank transfer), PayPal, Western Union, and L/C for large orders. Standard payment terms are 50% deposit and 50% balance before shipment, with flexible terms for established customers.

Yes, we can issue VAT invoices (13% for goods) for domestic Chinese customers, and commercial invoices with packing lists for international orders.

CNC machining pricing depends on material, part complexity, machining time, tolerances, surface finish, quantity, and order urgency. We provide detailed quotations with material cost, machining cost, surface treatment cost, and inspection cost breakdowns.

Yes, unit price decreases significantly with higher quantities due to amortized setup costs, material volume discounts, and optimized production scheduling. We offer tiered pricing for different quantity levels.

For new customers, we may offer free prototype samples for simple parts with tooling cost waived, depending on the project. Please contact our sales team to discuss sample options.

Our quotations are valid for 30 days from the date of issue, after which prices may be adjusted due to material cost fluctuations, exchange rate changes, or production schedule changes.

Yikai Precision exports to over 30 countries and regions including the United States, Germany, United Kingdom, France, Japan, South Korea, Australia, Canada, and countries across Europe, North America, and Asia.

We ship via DHL, FedEx, UPS express (3-7 days), by air freight (5-10 days), or by sea freight (20-40 days) depending on order size, urgency, and customer preference.

Yes, we support various international trade terms including EXW, FOB Shenzhen, CIF, DDP, and DAP, with full export documentation including commercial invoices, packing lists, and certificates of origin.

Parts are individually wrapped in anti-rust paper or bubble wrap, then packed in cartons with foam padding, and finally placed on wooden pallets for sea freight. Custom packaging with part labels and barcodes is available.

Yes, we handle all export customs clearance documentation in China, including commercial invoices, packing lists, certificates of origin, and any required inspection certificates for your destination country.

If a delivery delay occurs due to production issues, we will notify you immediately with a revised schedule and offer options such as partial shipment, expedited production, or air freight upgrade at our cost for delays caused by us.