I. Name, purpose, quantity, brief technical requirements or nature of the tendered project
1. Project Name: Guangzhou Xiehe Senior High School Lighting and Audio Purchasing
2. Item Number: GPC-[2006]503
3. Quantity: 1 item, purchase budget: RMB 700,000.
4. Brief technical requirements or: See buyer requirements.
Second, the bidder qualification requirements
1. A legal person or other organization of the People's Republic of China;
2. The registered capital of the bidder is not less than RMB 2 million;
3. The bidder must complete one or more audio stage lighting system projects in the past two years (2004-July 2006) to provide a copy of the contract or the notice of winning the bid;
4. The bidder has a stable professional design, product supply, engineering construction and after-sales service capability in Guangdong Province. The above scope is subject to the business scope or registration location of the bidder's business license;
3. The time, place, method and price of the bidding documents for obtaining the bidding documents
1. Time for obtaining bidding documents: December 1, 2006 to December 21, 2006 (office hours)
2. Location of the bidding documents: Guangzhou Municipal Government Procurement Center
3. The cost of the bidding documents: RMB 150 yuan / set (not refundable after sale)
4. Ways to obtain bidding documents: on-site registration or purchase payment by transfer.
The method of paying for a purchase by transfer is as follows:
1 Transfer the bidding documents to the cost:
Beneficiary: Guangzhou Municipal Government Procurement Center Bank: Guangzhou Commercial Bank Hengfu Branch Account Number: 800102204811018
Please indicate the name of the purchaser and the “cause: purchase GPC-[2006] 503 bidding documentsâ€
2 Log in to the website of the center and download the bidding documents in the bidding announcement of this project (click the attachment in the upper left corner to download). The downloaded bidding documents are encrypted documents. After the payment, the computer fills in the “Purchasing Purchase Document Registration Form†in the download package, together with the copy of the business license, the remittance slip, faxed to Miss Song, 020-83581722, and then call 83881674 to ask for the password. The on-site registration can be purchased directly at the password).
4. Time for submitting bid documents, time and place for bid opening
1. Time for submitting bid documents: December 25, 2006, 9:00 am to 9:30 am
2. Deadline for bid submission and time for bid opening: December 25, 2006 at 9:30 am
3. Bid Opening Location: Meeting Room on the 2nd Floor of Guangzhou Municipal Government Procurement Center
V. Name, address and contact information of the purchaser and procurement agency
1. Contact information of purchaser Name of purchaser: Purchaser of Guangzhou Xiehe High School Address: No. 18, Xizeng Road, Xicun Contact: Huang Yong Tel: 26282016 13316268580
2. Contact Name of Purchasing Agency: Guangzhou Municipal Government Procurement Center Address: First Floor, Jinli Building, No. 242 Hengfu Road, Guangzhou (at the intersection of Yongtai Road) Post Code: 510095
Website: (Please inform the online clarification announcement and announcement of the tender results)
Purchasing Project Contact: 020- Guo Jianhua 83581486 Fax Phone: 020-83581722
Margin enquiry telephone: 020-83582957 Chen Yingyijing bidding documents cost enquiry Tel: 020-83582957 Chen Ying office hours: Monday to Friday 8:30 to 12:00, 14:00 to 17:00 (Friday afternoon for politics, Business study time, not working outside the office)
Guangzhou Municipal Government Procurement Center December 1, 2006 Attachment: Location Map of Purchasing Center
[GPC-[2006] 503 bidding documents]
Lead Free Piezoelectric Elements
The Co-Al Co-doped Barium Titanate
Lead-free Piezoelectric Ceramics was successfully developed by Yuhai company
through repeated experiments. By Researching the influence of Co-Al Co-doping
on the structure and properties of Barium Titanate-based piezoelectric
ceramics, the formulation and preparation technology of Barium Titanate-based
piezoelectric ceramics were optimized. Yuhai`s BaTiO3 was prepared by conventional
solid-phase sintering method, with the piezoelectric constant d33 (>170pC/N),
dielectric loss tgδ≤0.5% and mechanical coupling coefficient Kp≥0.34.
Barium titanate lead-free piezoelectric
ceramics are important basic materials for the development of modern science
and technology, which was widely used in the manufacture of ultrasonic
transducers, underwater acoustic transducers, electroacoustic transducers,
ceramic filters, ceramic transformers, ceramic frequency discriminators, high
voltage generators, infrared detectors, surface acoustic wave devices,
electro-optic devices, ignition and detonation devices, and piezoelectric
gyroscope and so on.
Application: military, ocean, fishery, scientific research,
mine detection, daily life and other fields.
China Patent of Yuhai company`s BaTiO3
Chinese Patent No.: ZL 2011 1
0126758.6
Name: Lead-free Barium Titanate
Piezoelectric Material with Addition of Cobalt and Aluminum
Lead free piezo material BaTiO3
Lead-free Material
Properties
BaTiO3
Dielectric Constant
ɛTr3
1260
Coupling factor
KP
0.34
K31
0.196
K33
0.43
Kt
0.32
Piezoelectric coefficient
d31
10-12m/v
-60
d33
10-12m/v
160
g31
10-3vm/n
-5.4
g33
10-3vm/n
14.3
Frequency coefficients
Np
3180
N1
2280
N3
Nt
2675
Elastic compliance coefficient
Se11
10-12m2/n
8.4
Machanical quality factor
Qm
1200
Dielectric loss factor
Tg δ
%
0.5
Density
Ï
g/cm3
5.6
Curie Temperature
Tc
°C
115
Young's modulus
YE11
<109N/m3
119
Poison Ratio
0.33
Piezo Element,Piezo Ceramic Elements,Piezoelectric Ceramic,Pzt Tubes
Zibo Yuhai Electronic Ceramic Co., Ltd. , https://www.yhpiezo.com