Current
ISO 9001:2015 Certificate — English
No. 06725Q20908R0S
Manufacturing of flow-measurement throttling devices and sales of instruments and meters.
View evidence recordPROCUREMENT EVIDENCE LIBRARY
50 credentials, each with a stable page and a defined boundary.
Review and share management-system certificates, safety and licensing records, measuring-instrument model approvals, patent grants, trademarks and corporate recognition. Every entry preserves its document number, scope, status and validity wording.
CATEGORY 01
Management systems
Certification scope and continuing validity depend on the certificate, surveillance audits and the certification body's current public record.
Current
ISO 9001:2015 Certificate — Chinese
No. 06725Q20908R0S
Official Chinese-language counterpart of the quality management system certificate.
View evidence record
Current
ISO 14001:2015 Certificate — English
No. 06724E20464R0S
Environmental management for flow-device manufacturing and instrument sales activities.
View evidence record
Current
ISO 14001:2015 Certificate — Chinese
No. 06724E20464R0S
Official Chinese-language counterpart of the environmental management system certificate.
View evidence record
Current
ISO 45001:2018 Certificate — English
No. 06724S30410R0S
Occupational health and safety management for manufacturing and related sales activities.
View evidence record
Current
ISO 45001:2018 Certificate — Chinese
No. 06724S30410R0S
Official Chinese-language counterpart of the occupational health and safety certificate.
View evidence recordCATEGORY 02
Safety & licensing
The document applies only to the models, activities, protection concepts, architectures and conditions stated in its scope; one component document does not certify an entire assembly.
Current
Special Equipment Production License
No. TS2737548-2027
Manufacture of pressure-pipeline component combination devices within the scope stated on the license.
View evidence record
Current
SIL Functional Safety Certificate — Main Page
No. 6G230808.JSAQD69
IEC 61508:2010 assessment of listed intelligent differential-pressure flowmeter models; SC 3 / SIL 3 capable subject to the stated architecture and application constraints.
View evidence record
Current
SIL Functional Safety Certificate — Annex I
No. 6G230808.JSAQD69
Annex identifying assessed model versions, component architectures, demand assumptions and failure-rate data.
View evidence record
Current
Explosion-Proof Certificate — Intelligent DP Flowmeter
No. CLEx23.8285
SER15-3600 intelligent differential-pressure flowmeter; Ex db IIC T6 Gb under the standards stated on the certificate.
View evidence recordCATEGORY 03
Model approvals
Approved model, size, accuracy class and configuration must match the supplied instrument; model approval is not a blanket approval of every product offered by the manufacturer.
Approved
V-Cone Flowmeter Model Approval
No. 2022F212-37
VSNZ V-cone flowmeter model approval; approved range and accuracy class are stated on the certificate.
View evidence record
Approved
Lierba Flowmeter Model Approval
No. 2021F508-37
LRB-300 Lierba averaging-pressure flowmeter model approval.
View evidence record
Approved
Flow Nozzle Model Approval
No. 2023F354-37
LG-series flow nozzle model approval.
View evidence record
Approved
Averaging Pitot Flowmeter Model Approval
No. 2023F355-37
LGA averaging Pitot flowmeter model approval.
View evidence record
Approved
Orifice Flowmeter Model Approval
No. 2021F509-37
SRLB orifice flowmeter model approval.
View evidence record
Approved
Balanced Flowmeter Model Approval
No. 2020F752-37
SEGD-series balanced flowmeter model approval.
View evidence record
Approved
Venturi-Tube Flowmeter Model Approval
No. 2023F353-37
LGW-series Venturi-tube flowmeter model approval.
View evidence record
Approved
Wedge Flowmeter Model Approval
No. 2022F211-37
LGX-series wedge flowmeter model approval.
View evidence record
Approved
Vortex Flowmeter Model Approval
No. 2024F152-37
Vortex flowmeter model approval within the product range stated on the certificate.
View evidence recordCATEGORY 04
Patent certificates
The certificate records a grant at the publication date. Current legal status must be checked in the official patent register, and a patent grant does not by itself establish product performance or model approval.
Grant record
Dual-Orifice Wide-Range DP Technology — Invention Patent
No. ZL 2025 1 0551686.1
Invention-patent grant titled ‘A Differential-Pressure Measurement Device’, supporting Shizhong's dual-orifice wide-range flowmeter development.
View evidence record
Grant record
V-Cone Flowmeter — Utility Model Patent
No. ZL 2020 2 0866229.4
Utility-model grant certificate for a V-cone flowmeter construction.
View evidence record
Grant record
Integrated Venturi-Tube Flowmeter — Utility Model Patent
No. ZL 2020 2 0946118.4
Utility-model grant certificate for an integrated Venturi-tube flowmeter.
View evidence record
Grant record
Online-Service Lierba Flowmeter — Utility Model Patent
No. ZL 2020 2 0788696.X
Utility-model grant certificate for a Lierba flowmeter designed for online installation and maintenance.
View evidence record
Grant record
Secure-Mount Lierba Flowmeter — Utility Model Patent
No. ZL 2020 2 1209911.2
Utility-model grant certificate for a securely mounted Lierba flowmeter construction.
View evidence record
Grant record
Improved-Accuracy Orifice Flowmeter — Utility Model Patent
No. ZL 2020 2 1216540.0
Utility-model grant certificate for an orifice-flowmeter construction intended to improve measurement accuracy.
View evidence record
Grant record
Flow Nozzle — Utility Model Patent
No. ZL 2020 2 2396573.4
Utility-model grant certificate for a flow-nozzle construction.
View evidence record
Grant record
Multi-Point Lierba Flowmeter — Utility Model Patent
No. ZL 2020 2 0837749.2
Utility-model grant certificate for a multi-point flow-measurement Lierba flowmeter.
View evidence record
Grant record
Verabar Flowmeter — Utility Model Patent
No. ZL 2020 2 0839184.1
Utility-model grant certificate for a Verabar-type averaging-pressure flowmeter construction.
View evidence record
Grant record
Orifice Plate — Utility Model Patent
No. ZL 2020 2 2607949.1
Utility-model grant certificate for an orifice-plate construction.
View evidence record
Grant record
Differential-Pressure Flowmeter — Utility Model Patent
No. ZL 2023 2 3263363.8
Utility-model grant certificate for a differential-pressure flowmeter construction.
View evidence record
Grant record
Balanced Flowmeter — Utility Model Patent
No. ZL 2020 2 1209900.4
Utility-model grant certificate for a balanced flowmeter construction.
View evidence record
Grant record
Insertion Multi-Throat Venturi Flowmeter — Utility Model Patent
No. ZL 2020 2 0918672.1
Utility-model grant certificate for an insertion-type multi-throat Venturi flowmeter.
View evidence record
Grant record
Intelligent Natural-Gas Flowmeter — Utility Model Patent
No. ZL 2023 2 1872512.8
Utility-model grant certificate for an intelligent natural-gas flowmeter construction.
View evidence record
Grant record
Wedge Flowmeter — Utility Model Patent (2020)
No. ZL 2020 2 1187795.9
Utility-model grant certificate for a wedge flowmeter construction.
View evidence record
Grant record
Orifice-Flowmeter Machining Fixture — Utility Model Patent
No. ZL 2020 2 1188678.4
Utility-model grant certificate for production tooling used to machine orifice-flowmeter components.
View evidence record
Grant record
Flowmeter-Flange Welding Fixture — Utility Model Patent
No. ZL 2020 2 1223969.2
Utility-model grant certificate for tooling used to weld flowmeter flanges.
View evidence record
Grant record
Insulated-Pipeline Balanced Flowmeter — Utility Model Patent
No. ZL 2023 2 1230332.X
Utility-model grant certificate for a balanced flowmeter designed for insulated-pipeline installations.
View evidence record
Grant record
Combined Gas Flowmeter — Utility Model Patent
No. ZL 2023 2 3248812.1
Utility-model grant certificate for a combined gas-flowmeter construction.
View evidence record
Grant record
Modular Orifice Flowmeter — Utility Model Patent
No. ZL 2020 2 1054698.2
Utility-model grant certificate for a modular orifice-flowmeter construction.
View evidence record
Grant record
Temperature- and Pressure-Compensated Balanced Flowmeter — Utility Model Patent
No. ZL 2020 2 0844307.0
Utility-model grant certificate for a balanced flowmeter with integrated temperature and pressure compensation.
View evidence record
Grant record
Lierba Flowmeter Probe — Design Patent
No. ZL 2023 3 0050532.6
Design-patent grant certificate for the appearance of a Lierba flowmeter probe.
View evidence record
Grant record
Integrated Orifice Sensor — Utility Model Patent
No. ZL 2012 2 0459195.5
Historical utility-model grant certificate for an integrated orifice sensor.
View evidence record
Grant record
Lierba Flowmeter — Utility Model Patent
No. ZL 2012 2 0459185.9
Historical utility-model grant certificate for the Lierba flowmeter.
View evidence record
Grant record
Pressure-Balancing Flowmeter — Utility Model Patent
No. ZL 2012 2 0459189.5
Historical utility-model grant certificate for a pressure-balancing flowmeter.
View evidence record
Grant record
Wedge Flow Sensor — Utility Model Patent
No. ZL 2012 2 0459187.9
Historical utility-model grant certificate for a wedge flow sensor.
View evidence record
Grant record
Matrix Flowmeter — Utility Model Patent
No. ZL 2020 2 1054717.1
Utility-model grant certificate for a matrix flowmeter.
View evidence record
Grant record
Pressure-Balancing Flowmeter — Design Patent
No. ZL 2012 3 0432462.2
Historical design-patent grant certificate for the appearance of a pressure-balancing flowmeter.
View evidence recordCATEGORY 05
Trademarks
Rights, registered class and approved goods or services follow the certificate and the competent authority's current record.
Registered
Lierba Flowmeter Trademark — Class 9
No. 70365887
Registered mark for flowmeters in Nice Classification Class 9.
View evidence record
Registered
Lierba Flowmeter Trademark — Class 35
No. 70372506
Registered mark for the listed sales, marketing and business services in Class 35.
View evidence recordCATEGORY 06
Corporate recognition
Corporate recognition follows the period and authority stated on the certificate and does not replace product-specific certification or approval.
Recognition
National High-Tech Enterprise Certificate
No. GR202437003960
National High-Tech Enterprise recognition issued by the authorities shown on the certificate.
View evidence recordReady to discuss your application?
Send your process data for an engineering review and a project-specific next step.
ISO 9001TS Licensed30+ PatentsSince 1989