ogo and language2. Fast delivery: mass order in 30days, sample order in 3days.3.Experienced salesman will recommend suitable products for different regions and explain products in very detail.4. Reply your inquiries in 12hrs5. After sale service: we will track all good till it received by customer's hands. We provide 1% parts exchange if any spare parts damaged during shipment or use in 1 yr.??6. Product performance: we would like to do product review after products is selling in the market an