Yiwu Small Commodity Wholesale Market (also called as China Small Commodity City) is located Yiwu City, which is a city located in the middle of the Zhejiang Province. It is a large e-commerce platform elaborately constructed by Zhejiang China Small Commodity City Group Co., Ltd. to provide information services and network marketing services for Yiwu China Small Commodity City Market, which is the official website of Yiwu Small Commodity Market. The company launched a purchasing platform facing retailers all over the country - the public platform to shorten the distance between manufacturing and terminal sales, providing retailers with high quality, low price and competitive goods to help terminal sales. Founded in 1982, it is one of the earliest  sourcing products from china. Over the past 20 years, going through four relocations and eight expansion, Yiwu small commodity wholesale market now has a business area of more than 26 million square meters, more than 50,000 business places, 200,000 employees and more than 200,000 passengers per day. In 2013, the total market turnover reached 68.302 billion yuan, which was awarded the honorary title of "quality and credibility" by the State Administration of Quality Supervision and Inspection. It is the circulation, research and development, exhibition center of international small commodities, and the largest export base of small commodities in China.

Yiwu (agent for china products) small commodity wholesale market has advanced and developed market system, and the exhibition industry started early with a great influence. Since 2000, Yiwu small commodity wholesale market has taken WTO entry as an opportunity to establish a new goal of "building the world's largest supermarket, building an international shopping paradise", actively implement the internationalization strategy, vigorously develop the shopping tourism industry, and accelerate the construction of market infrastructure.

According to the latest statistics of Yiwu Customs, the BRICS countries exported by Yiwu Customs amounted to $550 million in the first half of this year, an increase of 40.5% over the same period last year. Among them, $280 million was exported to India, up 27.2% year-on-year. For the first time, it replaced Iran as the largest market for Yiwu's small commodity exports, while $140 million was exported to Brazil, up 40.1% year-on-year.

What is the vacuum casting?
The vacuum casting technology which uses prototype (SLA laser rapid prototyping china piece, CNC products) to make silicone mold under vacuum, and is poured under vacuum conditions, such as PU, ABS, etc. Vacuum casting is also used to clone the prototype or copy the piece. It has different types including vacuum mould casting, vacuum pressure casting, vacuum sand casting and so on. This method is especially suitable for small batch production. It is a low-cost solution to solve experimental production and small batch production in a short time, and can also meet the functional test proofing of some structurally complicated engineering samples.

Vacuum Casting Process

1. Make a silicone mold by using the master made by CNC machining and 3D printed.

2. Put the silicone mold into the vacuum molding machine.

3. Inject liquid epoxy resin and heat to cure.

4. After the curing is completed, take out the same part as the Master from the silicone mold, and one silicone mold can be used for 20 times.

Vacuum Casting is suitable for small batch production, which can greatly reduce production costs, increase production efficiency and shorten the construction period.

Applications for Vacuum Casting

It is mainly used for product copying and mold making in various industries. 
The outer casing of consumer electronics: 

Auto parts:

Industrial parts: 

Vacuum Casting Materials

We offer a wide range of material options: ABS, PP, PC, PMMA, POM, high temperature resistant materials, soft rubber, silicone rubber, etc. Varieties of materials are available to make silicone molds comparable to injection molded parts. The following pictures are rubber, PC-like material, ABS-like material, POM-like material and transparent material.

Advantages of Vacuum Casting

• The cost is low and the production cycle of the product is relatively short. Less waste and processing costs are much lower than CNC machining and 3D printing.
• It is suitable for the processing and production of small batch products. After making an original version, it can be copied according to the original version, and the production efficiency is high.
• Good mold operation. The soft molds after curing are all transparent or translucent, have good tensile strength, and are easy to cut and shape.
• The probability of processing failure is small. As long as there is no problem with the original, the copy will naturally not go wrong.
• Good repeatability. The silicone for molding has good fluidity before curing, and the fine structure and decoration of the model can be accurately maintained with vacuum defoaming.

 
We have the world's most advanced vacuum casting equipment, and provide post-processing lines such as polishing, painting and assembly. We can provide small batch production of small and medium-sized parts quikly. If you are looking for reliable vacuum casting service, please contact our professional team at info@duchgroup.com or contact us by visiting our website, we will provide quotes and suggestions free of charge.                                                                      

                                                            

The double plate china wafer check valve is used for the pure pipeline, industry, environmental protection, water treatment, high-rise building water supply, and drainage pipeline to prevent reverse flow of the medium. The disc check valve adopts wafer type, butterfly disc is two semicircular and adopts spring forced to reset. The sealing surface can be used as body welding wear resistant material or rubber lining.

Its disc adopts dual type, can close quickly by itself under the action of spring force, and because of the action of fast closing, can effectively prevent the backflow of the medium, sealing performance is good. The disc type check valve is a universal single flow valve that can be easily installed between two flanges. For disc check valves, we have ductile iron and stainless steel for various operating conditions. 

Stainless steel castings and copper casting, we hold the material source, starting from the analysis before casting furnace, to examine again, finally to the processing and testing, every step of the process is to ensure that the product after consistent with our commitment to customers, and according to the stainless steel material, we can customize as material 316 and 316 l material or demand a higher material products. We believe that our products with a craftsman's spirit and quality will convince customers that Chinese brands are becoming better and better, instead of low-end products long ago.

What is a mold?
In industrial production, various types of presses and special tools mounted on the press are used to produce metal or non-metal materials into parts or articles of the desired shape by pressure. This special tool is collectively referred to as a mold, and the material of the mold is generally divided into Plastic injection molding also has the formation of sheet metal steel molds.

To withstand high temperature, the metal seal must be used, but large leakage; For zero leakage, rubber seal must be used, but not high-temperature resistant. In order to overcome the contradiction of the double eccentric butterfly valve china, the triple offset butterfly valve was carried out.

The structural characteristics of the double eccentric eccentric axis of the stem position at the same time, make the butterfly plate type sealing face of the cone axis deflection in the cylindrical axis of ontology, that is to say, after the triple eccentric, butterfly plate sealing section is no longer true circle, but the ellipse, and so the seal face shape asymmetry, tilt to the center line of the ontology, on the other side is parallel to the centerline of ontology. The biggest characteristic of the triple eccentric is fundamentally changed the seal structure and seal position is no longer, but the torque seal, namely not rely on the elastic deformation of the seat, but completely rely on the seat of the contact pressure to achieve sealing effect, thus solved the problem of metal seated zero leakage at a stroke, and because of the contact pressure and the medium is proportional to the pressure, resistance to high pressure high temperature is solved. Are abundant as producers of triple offset butterfly valve, our valves service life is long, the key is the beginning of the material and material technology progress, many new high-performance materials developed in recent years, also appeared many casting, welding, spray welding, painting, such as molding, sintering, composite and surface treatment of new technology and new technology and equipment. Paying attention to the information about material science and applying it to the valve in time is an important technical way to develop high performance and high parameter valve.

Peace of Mind Therapeutic Services' 2015 Blanket & Coat Drive

Help give the gift of warmth this holiday season by donating all gently used blankets and coats for the homeless. The primary focus will be blankets and coats; however, socks are often a need so I will accept them as well. The drive will begin on Friday, October 16, 2015 until Friday, November 13, 2015. Drop off will take place on Saturday, November 14, 2015 beginning at 5pm. Distribution of blankets, coats and socks will occur in Washington, DC.

Time: October 30, 2015 to November 13, 2015
Location: Maryland, Virginia & Washington, DC Metro area
City/Town: Washington, DC
Phone: office: (301) 850-1121/(301) 641-0814 or email: t_wallop@yahoo.com
Event Type: blanket & coat drive
Organized By: Teonna Wallop & Shawn Papi

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PRAISE 2015 "The Overflow"- DMV (Dance-Step-Mime) 2 Day Event 

Day 1

Who: KeeSpirit, LLC presents
What: PRAISE 2015 "The Overflow" (Ephesians 3:20)
When: Saturday, November 7, 2015 (4PM)
Where: THEARC Theater (1901 Mississippi Ave. Washington, DC 20020)
Why: Celebrating 15 years of the PRAISE Experience in the DMV area. Featuring church ministries and performing art groups in the area of DANCE-STEP-MIME. Each evening features different participants.

https://www.eventbrite.com/e/praise-2015-the-overflow-11715-celebrating-15-years-of-the-praise-experience-tickets-18465572023?aff=efbevent

*Advertising opportunities are available

Day #2

Who: KeeSpirit, LLC presents
What: PRAISE 2015 "The Overflow" (Ephesians 3:20)
When: Saturday, November 8, 2015 (4PM)
Where: Charles H. Flowers High School (10001 Ardwick-Ardmore Rd. Springdale, MD 20774 )
Why: Celebrating 15 years of the PRAISE Experience in the DMV area. Featuring church ministries and performing art groups in the area of DANCE-STEP-MIME. Each evening features different participants.

http://www.eventbrite.com/e/praise-2015-the-overflow-11815-celebrating-15-years-of-the-praise-experience-tickets-18466302207

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Montessa Lee Book Signing Event

Time: November 15, 2015 from 3pm to 5pm
Location: Living Well Book & Health Store
Street: 12004 Cherry Hill Road
City/Town: Siver Spring, MD. 20904
Website or Map: http://montessalee.com
Event Type: book signing
Organized By: Montessa M. Lee

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SINGAPORE CHINA TIBET TOUR 2015

Time: November 5, 2015 to November 16, 2015
Location: Singapore, China, and Tibet
City/Town: Singapore, China, and Tibet
Website or Map: http://www.marilynandsarah.or…
Phone: 888-637-4545
Event Type: tour
Organized By: Marilyn and Sarah

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Winter Jam 2015 Tour Spectacular

Time: November 5, 2015 at 6pm to November 15, 2015 at 11pm
Location: U.S. cities - WA, OR, ID, CA, AZ & NM
Website or Map: http://2015.jamtour.com
Event Type: tour
Organized By: NewSong

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Stephanie Slaybaugh LIVE in concert featuring Dynamic Movement & Kezia The Poet

Time: November 14, 2015 from 7pm to 9pm
Location: Full Gospel Church of God
Street: 220 St. John's Church Road
City/Town: Camp Hill, PA.
Event Type: concert

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For more information about these events visit our network's "Events & Activities" link: http://heypapipromotions.com/events

KEEPING YOU CONNECTED BY SPREADING THE GOSPEL THROUGH PROMOTIONS & ENTERTAINMENT !!!