Q1: What’s the difference between a Pre-rinse unit and a common faucet? Pre-rinse unit is High temperature & high pressure resistant and more durable Q2: Are you a trading company? NO! We’re a manufacturing factory with over 13 years experience. Q3: Where is your factory? Our factory is located in Shuikou town,Kaiping,Jiangmen City , 1.5hr drive from Guangzhou And it’s our pleasure to arrange the pickup in Guangdong. Q4: Do you offer OEM & ODM service? Yes , product or packaging all available , we have professional R&D and sales team to understand customers’ needs. For OEM, your brand logo can be lasered onto the product once receipt of your letter of authorization. Q6: What’s your MOQ and what's the production lead time? We accept 1pc order , and for order within 200sets , lead time is 7days Q7: How do your control product quality? We implement strict quality control system from raw material sourcing to finished products , we send sample products to run test in authorized lab every other months.100% inspection for each shipment before delivery. Q8: How's lead time and cost of developing new prototype? Different design, different leadtime and cost. The prototype cost can be refund once total order quantity reach a certain amount.