About KAIRUILAI
Founded in January 2010, Changzhou Kairuilai Precision Tools Co., Ltd. is a national high-tech enterprise specializing in R&D and manufacturing of honing equipment, honing tools, precision mechanical components, and customized honing process technical services.

Company Overview
Located at No. 6 Hengxi Road, Niutang Industrial Park, Wujin District, Changzhou, Jiangsu Province, the company owns 4,500 square meters of specialized production facilities with total assets exceeding 40 million yuan. We have successfully broken through technical barriers in deep hole precision machining and established core competitiveness in the industry.
The company is equipped with over 50 sets of advanced production and testing equipment including Starrag internal and external cylindrical grinders, Mazak and OKUMA turning-milling composite centers, Zhongjie horizontal boring and milling machines, DMG CNC lathes, precision wire cutting machines, CNC surface grinders, and self-developed CNC honing machines. Testing equipment includes Zeiss CMM, Mahr contour instruments, Mahr roughness testers, and Swiss height gauges, ensuring stable annual production capacity of 10,000 sets of precision mechanical components.
Our Core Advantages
What sets us apart from competitors
Advanced Equipment
50+ sets of high-end CNC equipment including Starrag grinders, Mazak OKUMA machining centers, and self-developed honing machines
Professional Team
35 employees with 12 college-educated technicians and 2 senior engineers building a specialized talent team
Quality Certifications
Four major system certifications: Quality, Environment, Occupational Health & Safety, and Intellectual Property Management
Innovation Driven
66 authorized patents including 15 invention patents, breaking foreign technology monopoly in deep hole precision machining
Manufacturing Facility
The company strictly adheres to modern enterprise standardization management principles, comprehensively establishing and implementing quality control, environmental management, occupational health and safety, and intellectual property integrated management systems. We have successfully passed four major system authoritative certifications, continuously consolidating standardized operation foundations to ensure long-term stable, green and sustainable high-quality development.
- 66 Authorized Patents (15 Invention Patents)
- National High-Tech Enterprise Certified
- Changzhou High-Tech Product Award (2019, 2022, 2025)
- Registered "Kairuilai" Brand Trademark

Quality Certifications
Internationally recognized quality standards and certifications
ISO 9001 Quality Management System
ISO 14001 Environmental Management System
ISO 45001 Occupational Health & Safety System
Intellectual Property Management System
Authorized Partner Brands
We are the authorized agent for leading honing machine manufacturers in China
Ningbo HaiGong(Group)Company
Professional honing machine manufacturer with advanced technology and comprehensive product line for precision machining applications
Nanjing SenerNan Percision Machine Tool Co.,Ltd.
Leading manufacturer specializing in high-precision honing equipment for automotive and industrial sectors
Global Export Markets
Serving customers in over 20 countries across 5 continents
Partner With Us
Ready to discuss your honing requirements? Contact our team for a consultation
Contact Us Today