# Lonying > Lonying is an experienced China-based manufacturer supplying high-quality Flame Ionization Detectors, VOCs Detectors, and Exhaust Gas Analyzers at factory prices. Request a quote today! ## Contact Us - [Tel](tel:+86-137-0630-5199): +86-137-0630-5199 - [Mail](mailto:cecilia@lonyinggroup.com): cecilia@lonyinggroup.com - [Tel](tel:+86-182-2193-3371): +86-182-2193-3371 - [WhatsApp](https://api.whatsapp.com/send?phone=8618221933371): 8618221933371 ## Social Media - [Facebook](http://www.facebook.com) - [Linkedin](http://www.linkedin.com) - [Youtube](https://www.youtube.com) - [Instagram](https://instagram.com) ## Website Language Versions - [English](https://www.longyingly.com): VOCs Detector & Exhaust Gas Analyzer Manufacturer - Lonying ## Website Navigation - [Home](https://www.longyingly.com/index.html): Home - [Products](https://www.longyingly.com/products.html): Products - [Environmental Monitoring Products](https://www.longyingly.com/Environmental-Monitoring-Products-pl45642086.html): Environmental Monitoring Products - [Sampling Probes](https://www.longyingly.com/Sampling-Probes-pl40642086.html): Sampling Probes - [Environmental Calibration Instrument](https://www.longyingly.com/Environmental-Calibration-Instrument-pl49642086.html): Environmental Calibration Instrument - [Accessories&Consumables](https://www.longyingly.com/Accessories-Consumables-pl48542086.html): Accessories&Consumables - [About Us](https://www.longyingly.com/aboutus.html): About Us - [Applications](https://www.longyingly.com/applications.html): Applications - [News](https://www.longyingly.com/news.html): News - [Contact Us](https://www.longyingly.com/contactus.html): Contact Us ## Product Category - [Environmental Monitoring Products](https://www.longyingly.com/Environmental-Monitoring-Products-pl45642086.html): Environmental Monitoring Products - [Fixed Source Emission Monitor](https://www.longyingly.com/Fixed-Source-Emission-Monitor-pl44642086.html): Fixed Source Emission Monitor - [VOCs Monitor&Mobile Source](https://www.longyingly.com/VOCs-Monitor-Mobile-Source-pl41642086.html): VOCs Monitor&Mobile Source - [Ambient Air Quality Monitor](https://www.longyingly.com/Ambient-Air-Quality-Monitor-pl43642086.html): Ambient Air Quality Monitor - [Water Quality Monitor](https://www.longyingly.com/Water-Quality-Monitor-pl42642086.html): Water Quality Monitor - [Sampling Probes](https://www.longyingly.com/Sampling-Probes-pl40642086.html): Sampling Probes - [Environmental Calibration Instrument](https://www.longyingly.com/Environmental-Calibration-Instrument-pl49642086.html): Environmental Calibration Instrument - [Accessories&Consumables](https://www.longyingly.com/Accessories-Consumables-pl48542086.html): Accessories&Consumables ## FAQ - **Q: What are the payment methods?** A: The common payment methods are as follows: A certain percentage of the payment is made upon signing the contract, and the full amount is paid before the goods are dispatched. - **Q: Are product demonstrations or prototype tests provided?** A: We strongly recommend that you visit our showroom or conduct on-site inspections of installed cases. For key clients and projects, we can negotiate and arrange for prototypes to be brought to your site for a short-term test to ensure that the equipment fully meets your actual operational requirements.  - **Q: How long does it take from placing an order to completing the production of the equipment?** A: For the standard model, the regular delivery period is 30-45 working days. The cycle includes production, assembly, complete machine testing and calibration. The cycle for customized products or bulk purchases will be longer accordingly. The sales manager will provide an accurate schedule after the contract is signed.  - **Q: How long is the warranty period? What does the warranty cover?** A: We offer a 12-month warranty for standard products, starting from the date of equipment acceptance and qualification. The warranty covers faults caused by material or manufacturing defects. We will provide free repair or replacement.  - **Q: How long does the period from placing an order to equipment installation take?** A: For standard models, the regular delivery time is 10 to 20 working days. The period includes production, assembly, complete machine testing and calibration. The cycle for customized products or bulk purchases will be longer accordingly. The sales manager will provide an accurate schedule after the contract is signed.