I. Project Overview
1. Project Name: Viaduct Project of Zhao'an Road, Shijiazhuang City
2. Construction site: Chun'an Road
3. Scale: The total length is about 9.7 kilometers.
4. The scope and content of the tender:
Supply, installation and commissioning of LED screens.
5. Source of funds: urban construction funds
6. Planned construction period: The goods will arrive within 10 days after the contract takes effect, and will be completed on June 20, 2009.
7, quality level: qualified
Second, the bidding conditions
The registered capital is not less than 3 million yuan. Since January 1, 2006, at least one independent legal entity with the same project performance has been completed.
Third, the time and place of bidding registration
1. Applicant registration time: April 21, 2009 to April 27, 2009, from 9:00 am to 11:30 am, from 14:00 to 16:00 pm (except public holidays).
2. Applicant's place of registration: Shijiazhuang City Construction City Remarks: On April 27, 2009, the new construction market will be registered at the third floor of the northwest corner of the intersection of Chun'an Road and East Second Ring Road.
3. The bid applicant must hold the original of the business license of the enterprise legal person, the similar performance contract, the power of attorney of the legal representative, the ID card of the authorized person, and a copy of the bound book (with the official seal of the bidding unit). Sign up. At the same time, the registration will be registered with the examination office of the bidding office.
4. The bidding applicant will receive the bidding documents within the prescribed time. After submitting the bid security deposit, the bid documents will be delivered at the time and place required, and the bid opening meeting will be held on time.
Tenderer: Shijiazhuang City Construction Investment Holding Group Co., Ltd. (official seal)
Tendering agent: Hebei North Tendering Co., Ltd. (official seal) Company Name: Hebei Fangda Tendering Co., Ltd. Contact: Zhe Zhe, Zhou Mingyan Tel: 0311-87220332, 13933179646 E-mail: Fax: Postal Code: Address: Shijiazhuang 373 North Friendship Street
Yuhai piezo materials include : hard piezo material, soft piezo material and lead free piezo material
Soft piezo material exhibits: larger piezoelectric constants, higher permittivity, larger dielectric constants, higher dielectric losses, larger electromechanical coupling factors, low mechanical quality factors, a lower coercive field, poor linearity, and is easier to depolarize. The ideal application of soft piezo materials is sensing needs. Yuhai soft pizeo materials are PZT-5, PZT-5H, PSnN-5 and PLiS-51.
Hard piezo material exhibits: smaller piezoelectric constants, lower permittivity, smaller dielectric constants, lower dielectric losses, smaller electromechanical coupling factors, high mechanical quality factors, a higher coercive field, better linearity, and is harder to depolarize. The ideal application of hard piezo materials is high power transducer needs. Yuhai hard pizeo materials are PZT-4, PZT-8, PCrN-4 and PBaS-4.
Yuhai company developped lead free piezo material BaTiO3 and apply for the Chinese Patent in 2011, to meet the needs of environmental protection in today's society.
Piezoelectric ceramic material
Properties and Classification
General description of material properties
Material Code
Properties
Application
Soft PZT ceramic
PZT-51
Characteristics:
larger piezoelectric constants, higher permittivity, larger dielectric
constants, higher dielectric losses, larger electromechanical coupling
factors, low mechanical quality factors, a lower coercive field, poor
linearity, and is easier to depolarize.
low-power ultrasonic transducers
PZT-52
low-frequency sound transducers
PZT-53
applications with high g coefficient, for example,
PZT-5H
microphones,vibration pickups with preamplifier
PLiS-51
low-frequency vibration measurements
PMgN-51
Hydrophones, transducers in medical diagnostics
PSnN-5
Actuators
Hard PZT ceramic
PZT-41
Characteristics: smaller
piezoelectric constants, lower permittivity, smaller dielectric
constants, lower dielectric losses, smaller electromechanical coupling
factors, high mechanical quality factors, a higher coercive field,
better linearity, and is harder to depolarize.
PZT-42
High-power acoustic applications
PZT-43
Hydroacoustics, sonar technology
PZT-82
piezomotor
PCrN-4
PBaS-4
Lead free piezo ceramic
BaTiO3
Characteristics: Low density, low curie temperature, lead free.
Ultrasonic transducers suitable for low-temperature underwater, for example ultrasonic transducer in fishfinder
Piezoelectric Material,Piezo Ceramic Element,Piezo Electric Cylinder ,Piezo Sphere
Zibo Yuhai Electronic Ceramic Co., Ltd. , https://www.yhpiezo.com