Shanghai Boqu Instrument Co., Ltd. strives to be the customer's favored supplier by delivering unswervingly high-quality products, such as online bod analyzer-water oxygen sensor. We proactively examine any new accreditation standards that are relevant to our operations and our products and select the materials, conduct production, and quality inspection based on these standards.. Our top priority is to build up confidence with the customers for our brand - BOQU. We are not afraid of being criticized. Any criticism is our motivation to become better. We open our contact information to customers, allowing customers to give feedback on the products. For any criticism, we actually make efforts to rectify the mistake and feedback our improvement to customers. This action has effectively helped us build long-term trust and confidence with customers.. We have created an easily accessible way for customers to give feedback through BOQU Water Quality Analyzer. We have our service team standing by for 24 hours, creating a channel for customers to give feedback and making it easier for us to learn what needs improvement. We make sure our customer service team is skilled and engaged to provide the best services..