NANOSHIELD technology
What's behind COPTON NANO oils: how nano-ceramic particles form the NANOSHIELD protective film.
Step by step
01 · Engine
The piston moves up and down dozens of times per second. The metal of the rings and the cylinder wall stays apart as long as a thin oil film holds between them.
02 · Risk zone
At top dead centre the piston stops for an instant while combustion pressure peaks — the oil wedge almost disappears. This is where rings and walls wear most. Let's zoom in.
03 · Layer 1 · Film
NANOSHIELD particles arrive with the oil and settle on the metal, forming a strong protective film about 100 nm thick on average.
04 · Layer 2 · Micro-bearings
Spherical nanoparticles between the parts act like micro-bearings: sliding friction becomes rolling friction. Resistance and wear drop, and the engine uses less energy.
05 · Layer 3 · Repair
Nanoparticles settle in pits and micro-scratches in the metal and level the surface. This is called nano self-repair.
How NANOSHIELD works — diagram
What NANOSHIELD gives
01
Nano-ceramic particles act like micro-bearings: sliding friction turns into micro-rolling.
02
The film stays on the parts after the engine stops, so protection is there from the first revolutions, before the oil is pumped through.
03
Frequent stops and starts mean increased wear. The NANOSHIELD film reduces wear in these conditions.
04
The film is stronger than an ordinary oil film, as the 2005 run showed: 5,050 km with the oil drained.
Test results for specific oils are in their product cards.
COPTON NANO record · 2005
In December 2005, seven cars treated with COPTON nano-ceramics had their engine oil drained and drove Qingdao — Beijing — Hengyang and back non-stop.
Source: sinolub.com
Low SAPS
NANO Star Shield has low sulfur, phosphorus and sulfated ash content. It is designed for cars with GPF and DPF filters and catalytic converters.
COPTON NANO Star Shield 5W-30
API SQ · ILSAC GF-7A
NANO Silver Shield, GT7 and COPTON Hybrid oils are made to API SQ and ILSAC GF-7A — standards for modern gasoline engines introduced in 2025. The oils are produced at COPTON's own plant in Qingdao.
COPTON NANO Silver Shield 5W-30
History
2005
The manufacturer releases nano-ceramic engine oils. Cars with COPTON nano-ceramics cover 5,050 km with the oil drained.
2016
Qingdao Copton Technology shares start trading on the A-share main board of the Shanghai Stock Exchange, code 603798.
2025
New standards for gasoline engines are introduced. API SQ is declared for NANO 1, Silver Shield, Golden Shield, GT7, GT8 and GT9 oils.
Where NANOSHIELD is used
NANOSHIELD nano-ceramics are in every NANO line oil for passenger cars.
How we publish data
We state test figures, service life and fuel savings only with a source for the specific product. If there is no source, we don't publish it.
Certificates
An American Petroleum Institute licence, TÜV Rheinland management system certificates and an independent market study — from the manufacturer's document pack.
API · licence No. 2033
The American Petroleum Institute licenses COPTON to use the API Service Symbol (“donut”) and the API Certification Mark (“starburst”) on its packs. The licence covers COPTON, NANO and GT oils: gasoline up to API SQ and ILSAC GF-7A, diesel up to API CK-4.
ISO 9001:2015
Design, manufacture, sales and service of lubricants and antifreeze. Issued to the Qingdao Copton Petrochemical plant; first certified in 2018.
VDA 6.1:2016
Quality management system to the requirements of the German Association of the Automotive Industry (VDA) for the design and manufacture of lubricating oils and antifreeze.
No. 1 · 2024
Shangpu Consulting Group study: by sales volume in tonnes in 2024, COPTON ranks No. 1 among nano engine oil brands in China. The statement was issued in August 2025.
