See our Company Profile About Us Shenzhen Baishan Mechatronics Co., Ltd. - As TOP Chinese high and new technology enterprise, founded in 1997, nearly 15 years of R&D, manufacture and sales of stepper motor driver and stepper motor. - Main product: Self-owned brand BS stepper motor drivers, totally 3 series/40 models in competitive prices and quality. - Authorized by Japan SANYO to sell SANYO series stepping motor. - Quality Control & Customers Feedback: 100% of pass, less than 2% back repair rate, 99% on-time delivery, customers satisfactory above 85 points. - ISO9001:2000 and ISO9001:2008 Quality Management System Certificated -CE certification for Stepper Motor Drivers - Certificate of Design Patent - Policy: Quality and Service Above Everything -Warranty: 3-month for replacement, 1-year for free repair(SANYO stepper motor is not included).</p>