Our History
Being one of leading manufacturer and exporter of various stone products in Xiamen China since 1985. We are comprehensive stone company combining excavation, design, processing, sales and installation. We have invested 3 quarries,such as G603 in Wuhan,New G654 and Nero Santiago in Shandong .
With our own factory and powerful workers team, we provide excellent service with the most competitive price and the best quality products for our customers. All of our staff make concerted efforts,based on 鈥淏uilding on the past, focusing on the future 鈥?to create our product style and feature with comprehensive design ability,advanced producing technique,perfect processing equipments and strict management systems.
Our Factory
We have 2 main qualified and professional factories located in Xiamen and Wuhan, with efficient equipment and granite processing line,total area over 50000m虏,with over 120 workers. Our handicraft technology is also at the leading stage in this field.
We also have small workshops in Qingdao and shanxi province to produce local material to save the tranport cost.
Our company's strength, re-credit, keep the contract, to ensure product quality, has won the trust of customers under the principles of various categories and low price. Welcome old and new customers from home and abroad call or come to our company for consultations and negotiations.Consecutive sales increasement of 10 years.
Our Product
We supply various stone products, such as Countertop,Vanity Top, Slab, Tile, Project cut-to-size,Fireplace, Stairs, Column, Sculpture, Fountain, Landscaping Stone, etc.
Product Application
Used for Exterior - Interior buidling construction, such as wall and floor applications, monuments, pool and wall capping, stairs,countertops, vanity tops and other design projects.
Our Certificate
ISO9001,CE, SGS certficate
Production Equipment
Block cutter
- Gang Saw6
- Circular Blade Saw20
- Wire Saw3
* Polish machine15
* Bridge cutters with Infra Red10
* Flame machine4
* Bush Hammer machine4
* Waterjet cutting machine9
* Engraving machine3
* Calibrating machine3
* Splitting machine18
* Automatic Moulding Polishing machine5
* NC shaping machine5
Production Market
Our products have gained good reputation from our clients in more than 50 countries in America, Europe, Middle East and Australia etc.
Our Service
We sincerely welcome every new potential client to contact us. We will not only supply you the right materials based on your required quality with competitive price, but also provide you excellent service via quick reaction with constructive solutions.
We focus on offer best after-sale service,solve quality complaint or service problems.
We insists on the aim of 鈥淲in on Quality, win on Price鈥?All of our staff welcome you to visit our factory and have business talks with us.We would like to create brilliant victory in the near future.manufacturer Silvia Cream Marble
website:http://www.yoyostones.com/

About us
Wintel is own with factory that specializes in manufacturing accessories for mobile phones and PCs. It consists of a very professional team with many years experience in this range. we endeavor to be an international famous accessories brand all the time.Especially in wireless field.
Provide OEM and ODM services
We also provide OEM and ODM services according to customers' requirements. Our products are widely distributed in Europe, the US, Asia, the Middle East, Africa and Australia.
We have a professional team which includes seasoned designers and engineers,the highest quality products are designed by our R&D group with an average of 5 years working experience. Under a strict quality management system, our factory runs smoothly to ensure that every product is high-quality.
Wintel is caring all protection needs of users for tablet & mobile phone accessories to avoid any possible damage from outside. Let us enjoy the top life together. The care which beyond the dreams and spirit is really from the heart.
Tomorrow, Wintel would like to be your inseparable friend, because we do care about you.
Our Product
Wireless Earbuds, Sports Bluetooth Earphone, Wireless Chargers, Bluetooth Speaker, Flash Disk USB Drive, Charger etc.
Product Application
Mobile phone & computer peripherals and accessories products
Our Certificate
CE,FCC,ROHS.Patent for Appearance and Reality and new type patent.
Production Equipment
Cutting bed, tablet machine, laser machine, embossing machine, high cycle ultrasonic, paper cutter, shaking tablet, computer machine, high machine, flat machine, hot press dispensing machine
Hot forming machine, beater mixer assembly line
Production Market
Europe and America锛寃e have cooperated with famous brand,such as NIXON,VOLVO for many years.
Our Service
OEM/ODM services are our best advantage. We have a team can develop new product each month and can draw the designs according to client鈥檚 idea.China Mens Genuine Leather Wallet manufacturers
website:http://www.topwellwireless.com/

PV CIRCUIT BREAKER MRL7-63
What is a photovoltaic circuit breaker? How to select photovoltaic switch?
What is a photovoltaic circuit breaker? Photovoltaic circuit breaker can also be called photovoltaic switch. The reliability and stability of photovoltaic DC switch is not only related to the safe and reliable operation of photovoltaic distribution system, but also related to the stable power generation and income of photovoltaic industry.
Main problems of photovoltaic DC switch
1. Contact high impedance causes overheating or even fire;
2. The switch cannot be turned off normally, and the switch handle remains in the "off" state;
3. Incomplete cut-off, causing sparks;
4. Because the allowable working current is too small, it is easy to cause overheating and damage or even shape deformation of the switch arc extinguishing chamber.
How to select photovoltaic DC switch?
1. Determine the system voltage
The maximum allowable voltage of the selected DC switch shall meet the voltage requirements of the photovoltaic system. Common are 600V and 1000V. Generally, the maximum system voltage connected to single-phase inverter is 600V, and the maximum system voltage of three-phase series or power station inverter is 1000V.
2. Determine the number of independent battery strings
If the built-in DC switch is integrated in the inverter, it is related to the number of independent MPPT of the inverter. Common inverters are single channel MPPT and dual channel MPPT. There are also a few grid connected inverters with three channel MPPT on the market. Generally, the inverter with power level of 1kw-3kw is designed as single channel MPPT; 3kw-30kw are two-way MPPT, and a few companies also have three-way MPPT inverters: large inverters above 100kW are generally input into one-way MPPT after confluence through combiner box. The number of independent mppts of the inverter determines the number of independent pass sections of the selected built-in DC switch.
If it is an external DC switch, it may be related to the designed system networking. You can choose an external DC switch with multiple strings of battery boards on and off or an external DC switch with only one string of battery boards on and off.
3. Determine the voltage and current of the battery string
If you have a better understanding of the structure of the photovoltaic inverter, especially when the inverter manufacturer selects the built-in DC switch, in order to effectively save the overall cost of the inverter, you can select it by studying the DC voltage and current curve in and out of the inverter, so as to ensure that the selected DC switch curve envelops the DC switch and current curve input by the inverter under various weather environments and temperatures.
4. Analyze the use environment and installation mode
The working temperature, protection and fire rating are determined according to the environment. Generally, the DC switch with good quality can work stably at - 40 掳 to 60 掳. The protection grade of common external DC switch is IP65. After the installation of built-in DC switch, the whole machine can pass IP65. The fire rating is generally shell or body material UL94V-0 and handle UL94V-2. Installation methods include panel installation, base installation, single hole installation, etc.
5. Determine the specific model
If the above 1-4 conditions are met, the specific model needs to be selected from the preferred brands. Generally, the specifications of specific models are segmented by current, and it is difficult to find a fully matched DC switch. Generally, a certain margin is reserved to select a DC switch higher than the specifications calculated theoretically. Common are 16a, 25a and 32A. MEANRAY Electric (MRL7 Series) have 40a, 50a, 63a, 600V or 1000V rated voltage levels.
SPECITICATIONO
ItemDC MCB
CodeMRL7-63
Pole1P2P3P4P
Voltage250V DC550V DC800V DC1200V DC
Current1A,3A,6A,10A,16A,20A,32A,40,50A,63A
StandardIEC/EN 60947-2, VC8036, SANS556-1
Breaking Capacity6KA,10KA
Characteristic CurveB,C,D
Working Temperature"-5掳"to +40掳
Protection DegreeIP20
Electrical lifeMore than 8000times
Mechanical lifeMore than 2000times
Dimension(W)H)D)18X80X7136X80X7154X80X7172X80X71
Installation35MM DIN RAIL
AccessoryYES
Installation Altitude鈮?000M
WORKSHOPChina Solar Circuit Breaker
website:http://www.meanray.net/circuit....-breaker/solar-circu

Our History
Founded in 2007锛孡angjun's predecessor was a professional factory producing tin cans and purple clay pots. Relying on location advantage of Yongkang Hardware Capital and continuous effort, after years of development, Langjun has grown quickly to a professional manufacturer of stainless steel household products for the R&D, production, sales and service.
Our Factory
The company has modern workshops and supporting facilities, covers an area of 17,000 square meters, has 6 advanced production lines, 200 professional production staff, and more than 20 quality management staff such as full inspection and patrol inspection. We have experienced in-house designers team to keep our products updated and welcome your ideas. We also rely on our advanced techniques to fulfill customized orders. Looking forward to cooperate with global friends and become your first choice for stainless steel water bottle.
Our Product
Stainless steel vacuum flask锛宻tainless steel coffee pot锛宻tainless steel food jar锛宻tainless steel thermos cup
Product Application
Drinking
Our Certificate
Qualification: ISO14001,ISO9001,ISO45001, BSCI;
Certificate: FDA銆丩FGB;
Patent: own 44 patents
Production Equipment
More than 280 professional production equipments to ensure 30,000pcs daily production capacity
Production Market
Asia: 90%, North America: 3%, Europe:5%, Australia: 2%
Our Service
We have our own experienced in-house designer. We will make drawing for mold or pattern design for your final confirmation according to your basic designs(like JPG, AI, CDR or PDF etc). Professional production team can provide you with logo, color, pattern custom. We can make your idea come true!
Our materials available are stainless steel,plastic including PP, PE, Tritan, acrylic, PCTG, AS, as well as TPE, silicone. They are 100% food safe grade, compliant with European and American food safe standards and passed third party tests such as FDA and LFGB. During production, we have more than 20 quality management staffs such as full inspection and patrol inspection of each production process to meet quality requirement.
Stable quality is guarantee of our long-term business cooperation, each order will be inspected by ourselves or your inspector before delivery to ensure qualityChina Double Wall Vacuum Water Bottle factory
website:http://www.lang-join.com/

3-Buten-1-ol
CAS # 627-27-0
Application: 3-Buten-1-ol is very active and participates in various organic synthesis reactions. It is widely used in plastic lenses, food flavors, petrochemicals, and other fine chemicals, especially in the pharmaceutical field, to synthesize new heterocyclic derivatives (such as anti-tumor and anti-AIDS drugs, anti-proliferative drugs, etc.).
Appearance: colorless and transparent liquid
Assay: 99%
Package:200L drum
We can provide 3-Buten-1-ol from grams to metric tons.Fine Chemicals manufacturers
website:http://www.fultra-chem.com/fine-chemicals/