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Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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+86 13525609655

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rsdzd@pyzyrsd.com

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Road West, North Branch, Jingkai Road, Puyang City

derrick screen mesh task chair
Laser diode - Wikipedia
Laser diode - Wikipedia

A ,laser diode,, (LD), injection ,laser diode, (ILD), or diode ,laser, is a semiconductor device similar to a light-emitting diode in which a diode pumped directly with electrical current can create lasing conditions at the diode's junction.: 3 ,Laser, diodes can directly convert electrical energy into light. Driven by voltage, the doped p-n-transition allows for recombination of an electron with a hole.

China Baskets Purchase China Baskets Purchase ...
China Baskets Purchase China Baskets Purchase ...

Spain customer purchased solid-liquid separation basket ,centrifuge,. ,Zhengzhou, Toper Industrial Equipment Co., ... wholesale kitchen appliance 8L ,capacity, plastic food fruit vegetable basket dish bucket washing bucket wash and drain. ... Ruilang ,Large, curved supermarket group purchase shop snack fruit portable small shopping basket.

Detection of Organophosphorus Pesticides in Wheat by Ionic ...
Detection of Organophosphorus Pesticides in Wheat by Ionic ...

As literature reported , increase of the alkyl chain causes increase of the ,capacity, and hydrophobicity of the ILs, and the bigger the anion size, the stronger the hydrophobicity. The size of Tf 2 N anion is bigger than PF 6 − and BF 4 − , thus, the Tf 2 N anion-based ILs exhibit high hydrophobicity and ,capacity,, which with the same effect will save the use of IL volume.

1. Introduction - Hindawi
1. Introduction - Hindawi

A ,centrifuge, (Refrigerated ,Centrifuge, XT, Thermo Scientific) and a Vortex mixer (Lab Dancer, IKA) were used for the centrifugal separation and thorough mixing of sample solutions. The UHPLC chromatographic separation was carried out by using a Zorbax SB-C18 column (Agilent, 3.0 × 50 mm, 1.8 μ m) with mobile phase A (0.1% phosphoric acid water, v/v) and mobile phase B (MeOH) at the flow …

Scientific Instrument Price 2021 Scientific Instrument ...
Scientific Instrument Price 2021 Scientific Instrument ...

Scientific Instrument Price - Select 2021 high quality Scientific Instrument Price products in best price from certified Chinese Instrument Cable manufacturers, Scientific Testing Instrument suppliers, wholesalers and factory on Made-in-China.com

Magnetic Graphene Dispersive Solid-Phase Extraction for ...
Magnetic Graphene Dispersive Solid-Phase Extraction for ...

The sample solutions were centrifuged used a Sigma 3–30 K ,centrifuge, (Sigma, German). The sample pretreatment was carried out on a Vortex-Genie 2 vortex mixer (Scientifific industries, USA). The PAEs were extracted from the magnetic graphene by a KQ700-DB ultrasonic generator (40 kHz, 120 W) (Kunshan, China).

China Scientific Instrument Scientific Instrument ...
China Scientific Instrument Scientific Instrument ...

China Scientific Instrument manufacturers - Select 2021 high quality Scientific Instrument products in best price from certified Chinese Medical Instrument, Optical Instrument suppliers, wholesalers and factory on Made-in-China.com

Preparation of high-capacity magnetic polystyrene ...
Preparation of high-capacity magnetic polystyrene ...

The recovery rate was 81.1 to 102.7%, and the relative standard deviation (,RSD, %) was 2.6 to 3.7%. The detection limit was 8.01 μg/L with a three-fold signal-to-noise ratio (S/N). It is proved that the magnetic material has a good adsorption detection study on SMR in milk.

Leading Photonics Technology - G&H
Leading Photonics Technology - G&H

G&H’s advanced optical engineering and manufacturing enables effective OEM system supply and development. Our expertise in optical systems, subsystems and components extends from research through the development of prototypes to volume manufacturing and is a catalyst for innovation and effective manufacturing in the aerospace and defense, industrial and telecom, and life sciences and ...

Selective extraction and determination of aromatic amine ...
Selective extraction and determination of aromatic amine ...

Before MSPE, sample was treated for acid hydrolysis as follow. 5 mL urine sample was put into 50 mL ,centrifuge, tube, and 1 mL concentrated HCl was added and reacted in 80 °C water bath for 1 h. After cooling in an ice bath, 2.4 mL 5 mol L −1 NaOH solution were added to neutralize excess acid and the pH of final urine sample was adjusted to 12–13.

Preparation of high-capacity magnetic polystyrene ...
Preparation of high-capacity magnetic polystyrene ...

14/1/2020, · Apparatus. Experiments were carried out in the following instruments: an LC-20AT high performance liquid chromatograph (Shimadzu Corporation, Japan), a JEM-2100 transmission electron microscope (JEM, Japan), a JJ-1 precision factory electric mixer (Shanghai Specimen Model Factory), a collecting thermostatic heating magnetic stirrer (,Zhengzhou, Changcheng Branch Industry and Trade …

SPE-UHPLC-FLD Method for the Simultaneous Determination of ...
SPE-UHPLC-FLD Method for the Simultaneous Determination of ...

A ,centrifuge, (Refrigerated ,Centrifuge, XT, Thermo Scientific) and a Vortex mixer (Lab Dancer, IKA) were used for the centrifugal separation and thorough mixing of sample solutions. The UHPLC chromatographic separation was carried out by using a Zorbax SB-C18 column (Agilent, 3.0 × 50 mm, 1.8 μ m) with mobile phase A (0.1% phosphoric acid water, v/v) and mobile phase B (MeOH) at the flow …

Determination of trace sulfonamides in foodstuffs by HPLC ...
Determination of trace sulfonamides in foodstuffs by HPLC ...

In this paper, a rapid and effective HPLC method, using a new 4-chloro-6-pyrimidinylferrocene-modified silica gel (NFcSi) as a solid-phase extraction (SPE) sorbent, was developed for the purification and determination of trace sulfonamides in foodstuffs. The main influencing factors of SPE including the amount of NFcSi sorbent, sample flow rate, and species and volume of the eluant were ...

DoD 2020.1 SBIR Solicitation | SBIR.gov
DoD 2020.1 SBIR Solicitation | SBIR.gov

1: S. Li and D. Botez, "Analysis of 2-D Surface-Emitting ROW-,DFB, Semiconductor Lasers for ,High-Power, Single-Mode Operation", IEEE Journal of Quantum Electronics, Vol. 43, No. 8, August 2007. KEYWORDS: Coherent Beam Combining, Mid-infrared Lasers, ,Photonic, Integrated Circuits, Free-space ,Laser, …

Selective extraction and determination of aromatic amine ...
Selective extraction and determination of aromatic amine ...

a ,Zhengzhou, Tobacco Research Institute of CNTC, ,Zhengzhou, 450001, China E-mail: yujingjing307@163.com , sfliu@126.com Fax: +86-371-67672575/2055

Stanford University
Stanford University

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OSA | Optical Fiber Communication Conference 2020
OSA | Optical Fiber Communication Conference 2020

A Co-integrated Silicon-Based Electronic-,Photonic, Wideband, ,High-Power, Signal Source. Saeed Zeinolabedinzadeh, Patrick Goley, Milad Frounchi, Sunil Rao, Christian G. Bottenfield, Stephen E. Ralph, M. Kaynak, Lars Zimmermann, Stefan Lischke, Christian Mai, and John D. Cressler. M2I.2 Optical Fiber Communication ,Conference, (OFC) 2020 View: PDF

Preparation of high-capacity magnetic polystyrene ...
Preparation of high-capacity magnetic polystyrene ...

The recovery rate was 81.1 to 102.7%, and the relative standard deviation (,RSD, %) was 2.6 to 3.7%. The detection limit was 8.01 μg/L with a three-fold signal-to-noise ratio (S/N). It is proved that the magnetic material has a good adsorption detection study on SMR in milk.

Selective extraction and determination of aromatic amine ...
Selective extraction and determination of aromatic amine ...

Before MSPE, sample was treated for acid hydrolysis as follow. 5 mL urine sample was put into 50 mL ,centrifuge, tube, and 1 mL concentrated HCl was added and reacted in 80 °C water bath for 1 h. After cooling in an ice bath, 2.4 mL 5 mol L −1 NaOH solution were added to neutralize excess acid and the pH of final urine sample was adjusted to 12–13.

A novel fluorescent optical fiber sensor for highly ...
A novel fluorescent optical fiber sensor for highly ...

1/2/2021, · Compare with in the air (Fig. 3b), the fluorescence signal was relatively stable within 20 s (Fig. 4c, red line) in the aqueous solution, which was attributed that the structure of [email protected] hydrogel was affected slightly in the aqueous solution mainly due to the ,large, specific heat ,capacity, of water for keeping the temperature of the [email protected] hydrogel stable.

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Road West, North Branch, Jingkai Road, Puyang City