Gas Meter

I need to purchase 1000 ultrasonic gas meters. Please provide the best price and delivery time options.

We are currently working on a tender project requiring G1.6 and G-4 gas meters. Our primary requirements include:
1. Suppliers must have valid offshore supply records to end users
2. Need satisfactory reference letters from previous clients
3. Prefer manufacturers with complete certification documentation
Please provide verifiable supply chain history and compliance certificates.

We need industrial IC card gas meters for restaurant use.  
Requirement specifications:  
- Must support 1 bar pressure  
- Prepaid smart card functionality required  
- Total quantity required: 200 units  
Please provide compatible models meeting these basic operational parameters.

We require 1,700 prepaid gas meters for a tender project, to be delivered in 3 batches (600/600/500 units). The meters must comply with STS certification and integrate with Customer Interface Unit (CIU). Technical specifications require LoRa-RF communication capability, REST API for remote reading, G1.6 diaphragm type, 3/4" NPTM connections, IP65-IP69 protection, minimum 5-year battery life with low battery/gas alarms. A 10-year warranty covering materials and manufacturing defects is mandatory. Full documentation in English/Portuguese must include calibration certificates and technical compliance proof.

I need to purchase 1 piece of Gas Rotary Flowmeter ZYLG250-DN80-R and 1 piece of Electronic Gas Corrector EVC-PTH-J-4-2G-EN000A. Please confirm availability and provide detailed specifications and pricing.

big quantity more than 650000 gas prepaid meter for residence use; 

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