Micro Metal mesh PET film is an optical transparent Conductive Film for anti radiation and electronic EMI shielding.
We are in a leading position in the innovation and development of display & window EMI/RFI shielding solutions. With the design update of display size and definition, the new generation of nano mesh film has higher transparency and stronger shielding effect. Adopting the innovative principle of nano-alloy wire conductive printing process, the introduction of etching grid technology, and the optimized display mode, making our meal mesh film to be the first choice for window and touch screen shielding.
Micro Metal Mesh PET Film has choices of 85 OPI, 100 OPI and 150 OPI for various applications.
EMI SHIELDING FILM
Item Number
Structure
Substrate thickness
Wire width
VLT
Haze
Av.EMI
Size
OCA Backing
Remarks
WSLPM250B (250 opi)
Irregular Mesh
PET+alloyed metal
125UM
9um
≥84%
≤2%
43.9DB
0.8*1.8m/sheet(blackened)
0.55*0.43m/sheet(super clear)
Optional
suitable for electromagnetic shielding of military products and civil use. The product has high transmittance and high-definition resolution, and the scenery is not distorted in any environment. Independent intellectual property rights, national military standard testing. It has excellent functions such as converting diffracted waves into internal energy and non-reflection of signals.
MT150
(150 opi)
PET+Ag Ni alloyed+rare earth
125UM
17UM
≥76%
≤5%
53.8db
1.5*300m
slitting service available
With OCA
Suitable for equipment window shielding, such as RFID vending machines, medical equipment windows, etc. Confidentiality room and conference room of organs and institutions. The electromagnetic radiation shielding of base stations or high-voltage lines is currently the most efficient product of transparent film in China.
DNPM150B
(150 opi)
PET+alloyed blackened (metal side)
150UM
15UM
≥76%
≤25%
50.5db
0.64*1.13m/sheet
With OCA
suitable for LCD screen shielding in special occasions. It also has anti-glare and anti-oxidation functions. Most LCD screens do not need to be adjusted in angle and have no interference fringes. High-efficiency shielding material for LCD screen
WSLDM85B(85 opi)
PET+Cu Ni alloyed(Surface 3H hardcoated)
125UM
21UM
≥80%
≤2%
42.6db
max width 1.5m
Optional
Suitable for observation window shielding, shelters, buildings. Take into account the screen effect and transmittance. With anti-scratch surface
DNPM85B
(85 opi)
PET+alloyed blackened (non metal side)
125UM
15UM
≥80%
≤20%
41.9db
0.76*1.3m/sheet
die cut service available
With OCA
It is suitable for LCD screen shielding in special occasions, and has anti-glare function at the same time, and most LCD screens do not need to be adjusted.
DNPM100B(100 opi)
PET+alloyed blackened (metal side)
125UM
15UM
≥80%
≤25%
48.9db
0.53*0.93m/sheet
die cut service available
With OCA
It is suitable for LCD screen shielding in special occasions, and has anti-glare function at the same time. Most LCD displays do not need to adjust the angle and have no interference fringes
For more details,please contact with your requirements.
Anti Radiation Film, RFID Blocking Film, Noise Blocking Film, Metal Mesh Pet Film, Metal Mesh Film, Optical Plastic 100Opi Metal Mesh Film,85Opi Metal Mesh Film Without Adhesive, Copper Grid PET Film Mianyang Prochema Commercial Co.,Ltd. , https://www.gustek.com
Applicable for Vending machines, unmanned supermarkets, shared library cabinets, self-service pickup machines, electronic square cabins, military LCD electromagnetic shielding, precision instrumentation display windows, confidential room glass doors and windows, shielding cabinets and other window shielding, home or office base stations and high-voltage wire electromagnetic radiation shielding.
How to follow up the large-scale compressor manufacturers of petrochemical plants
Large-scale petrochemical plants have significantly boosted the production of essential equipment such as pumps, valves, and compressors. As a critical component in the industry, compressors have seen some progress through technology transfer, internalization, and innovation. However, there is still a gap between domestic capabilities and international standards. With the growing trend toward larger petrochemical facilities, how can China's compressor industry bridge this gap and reach global leadership?
In recent years, both domestically and globally, petrochemical production has expanded rapidly, leading to a clear trend toward larger compressors. Internationally, atmospheric and vacuum distillation units now operate at 17 million tons per year, catalytic cracking units at 6.5 million tons, continuous reforming units at 2.45 million tons, and hydrocracking units at 3.5 million tons annually. Delayed coking units have reached 6.4 million tons, ethylene cracking units at 1.27 million tons, and polyethylene/polypropylene plants at 500,000 tons per year.
Although China’s compressor industry has made progress in breaking foreign market dominance, domestic manufacturers still lag in development capability, manufacturing technology, and management. Approximately 30% of centrifugal compressors and 20% of reciprocating compressors are imported. These imports mainly include high-pressure reciprocating compressors used in large-scale ethylene "triple machines," polypropylene, and polyethylene plants. Screw compressors in olefin extraction and air compressors in PTA plants also face challenges, especially those driven by steam turbines with complex coaxial configurations.
Since the 2000s, the scale of domestic refineries has grown from 2.5–5 million tons/year to 8–10 million tons/year, while ethylene plants have expanded from 110,000–300,000 tons/year to 800,000–1 million tons/year. The largest petrochemical centrifugal compressor currently in use in China is the crack gas compressor in Shanghai Seker’s 900,000-ton ethylene plant, featuring an inlet flow of 260,000 Nm³/h, outlet pressure of 3.89 MPa, and a shaft power of 45,000 kW. The largest reciprocating compressor is an ultra-high-pressure unit in a 200,000-ton/year high-pressure polyethylene plant, with a mass flow of 85,000 kg/h and an outlet pressure of 310 MPa, powered by a synchronous motor with 16,500 kW of power.
R&D efforts are shifting toward improving reliability, efficiency, and energy savings. Advances like three-dimensional flow theory have enhanced impeller blade design, boosting compressor efficiency beyond 88%. Modern control systems ensure stable operation for over three years without shutdown. Simulation software helps predict performance under real conditions, increasing new product success rates. Electromechanical integration enables automated monitoring, optimization, and protection.
Reciprocating compressors are widely used in oil refining, ethylene, and fertilizer industries, with piston loads exceeding 1,250 kN and shaft power over 10,000 kW. They are moving toward higher capacity, pressure, compactness, lower noise, and better environmental performance.
Screw compressors are popular due to their small size and ease of maintenance, but they remain largely imported due to high flow, pressure, and power requirements. For example, a butadiene screw compressor in an ethylene plant operates at 5,777 m³/h, 0.7 MPa, and 590 kW, while a regenerated gas compressor in a polyethylene plant runs at 1,678 m³/h and 400 kW.
Globally, screw compressor technology is evolving rapidly, with new tooth profiles enhancing efficiency and structural innovations improving performance. Microprocessor-based controls enable automatic monitoring and integration, making these systems more intelligent and efficient.