Questions & Answers

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General Inquiry:

Technical Support:

Service Time: Mon-Fri, 9:00-18:30 PDT

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B4 Fiber Laser Engraver

We are a China based company selling quality laser engravers and laser markers, as well as laser parts, accessories, and more! We strive to provide excellent technical support and timely customer service to our users.

Different platforms have different policies that affect the price we can offer.

ComMarker provides after-sale customer service to all customers, regardless of where the machine was purchased.

No matter which platform you buy ComMarker lasers, you can send a ticket on our website . Your question and problems will be accurately handled by our third party department if your products were purchased through third-party platforms.


AC (100-240V, 50-60HZ). When ordering machine,you should to chose 110V or 220V for your machine.

Fiber machine comes with two lense,110mm and 200mm. But you can order extra lens as your requirement.
CO2 galvo machine only has one lens,110mm
UV galvo machine comes with two lense,70mm and 110mm

Parameter difference
Q-switch: pulse width non adjustable, frequency 20kHz -100kHz
JPT MOPA: pulse width 1-500nm, frequency 1kHz – 4000kHz

The wider spectrum of parameters enable the MOPA laser to have better engraving results over some plastics and metal materials in comparison of the Q-switched or fiber laser technology, which include:
marking colors on stainless steel, titanium, marking black color on aluminum, marking on plastic without burnt yellow color and with higher accuracy.

However,if you are only looking for engrave metals at high speed, deepness, and you don’t need to engrave colors on metals, then you can choose a fiber laser. These machines may look the same but they are different not only on work effect and technology, they are also very different on price.

MOPA Laser can engrave over:

*Aluminium (with dark color effect also)
*Stainless Steel (with multiple colors)
*Carbon steel
*Iron and other metals
*ABS plastic (low rate of melting burn)
*PC plastic (low rate of melting burn)
*PLA plastic
*Silicon plastic
*PBT plastic and others
Fiber Laser can engrave over:

*Stainless Steel (Only white and dark colors)
*Carbon steel
*Iron and other metals
*ABS plastic (high rate of melting burn)
*PC plastic (high rate of melting burn)
*PLA plastic
*Silicon plastic
*PBT plastic and others

These machine can engrave different plastics but in some of them you will feel the engraving by the touch of our fingers.

Machine can work continuously for 24 hours.Its lifespan is 100,000 hours.Reaching its lifespan doesn’t mean it is totally unusable, but it only decays in laser power. 
In this case, you can set a higher power to achieve the same effect as before.If you’re unsatisfied with it, you can contact us via and require
a laser source replacement service (the price will depend on the laser source you choose).

It depends on the thickness you want to cut. B4 can cut stainless steel, aluminum,brass, silver and gold.
50W and above can cut metal well.For more details, please contact


Please do not laser beam requires extra safety measures including specialized laser eyewear. Every machine has laser safety goggles.If you are stil worry about it, please consider laser safety sheild or Laser enclosure.

A full 2-year warranty that includes laser power


Yes, B4 is compatible with LightBurn.

All ComMarker laser engraver can use LightBurn,which compatible with MacOS, version 10.11 and higher.


D69 and D80 refer to the clamping diameter. D69 rotary is suitable for small cylinder materal marking, such as ring bracelte ect.,D80 has the advantge of D69, and also can mark tumbler.

If the fumes can’t be discharged outdoors or if you are working with a material that produces a lot of fumes, it is recommended to purchase an air purifier.

Shopping Information

Please follow these instructions: 

Check your login details. Your login username is the email address you used for registration.

If you have forgotten your password, please select the “Forgot your password?” option on the Sign In page. Complete the information regarding your registration details and select the “Reset your password” option.

Please make sure that your web browser accepts cookies.

Our website may be undergoing system maintenance. If so, please wait 30 minutes and try again.

If you are still unable to access your account, you can contact our Customer Service Department and indicate the problem. We will assign a new password for you and you can change it once you log in.

Please sign into your account and select the shopping cart on the top right of the page. You will be able to view all of the items that are currently in the shopping cart. If you wish to delete an item from the cart, simply click on the “Remove” button next to the item. If you wish to change the quantity for any individual item, simply enter the new amount you want to purchase in the “Qty” column.

Yes, the more pieces you purchase, the higher the discount. For example, we have coupons for different product with different price. If you are interested in purchasing more than 10 pieces, we would be happy to provide you with a quote. Please contact our Sales Department and provide the following information:

– The product(s) that you are interested in

– The exact order quantity for each product

– Your desired timeframe

– Any special packing instructions, e.g. bulk packing without product boxes

Our Sales Department will reply to you with a quotation. Please note that the larger the order, the more postage you will save. For instance, if your order quantity is 20, the average shipping cost per unit will be much cheaper than if you just buy one piece.

Payment Information

PayPal is a secure and trustworthy payment processing service which allows you to shop online. PayPal can be used when purchase items by Credit Card (Visa, MasterCard, Discover, and American Express), Debit Card, or E-Check (i.e. using your regular Bank Account). We cannot see your card number as it is securely encrypted through PayPal’s server. This limits the risk of unauthorized use and access.

Once your payment has been received, we will send you a notification email to inform you about the order. You can also visit our store and log into your customer account to check the order status at any time. If we has received payment, the order status will show “Processing”.

We accept credit card, PayPal, etc, as the payment methods.

1). Credit Card. 

including Visa, MasterCard, JCB, Discover and Diners.

2). PayPal. 

The most convenient payment method in the world.

3). Debit Card. 

including Visa, MasterCard, Visa Electron.

Once you have placed an order, you should not change your billing or shipping address information. If you want to make a change, please contact our Customer Service

Department as soon as possible during the order processing stage to indicate your request. If the package has not been dispatched yet, we will be able to ship to the new address. However, if the package has already been shipped, then the shipping information will not be able to be changed while the package is in transit.

Sure, please contact, if you need invoice.

For your protection, your order is being processed by our payment verification team, this is a standard procedure to make sure all transactions made on our site are authorized and your future purchases will be processed in top priority.


Once you have placed an order, the shipping method should not be altered. However, you can still contact our Customer Service Department. Please do this as soon as possible during the order processing stage. It may be possible for us to update the shipping method if you cover any difference incurred in the shipping cost.

The duration depends on the shipping method and the destination country. Delivery times vary based on the shipping method used. If the package cannot be delivered on time due to war, flood, typhoon, storm, earthquake, severe weather conditions, or any other situation which cannot be foreseen or avoided, then delivery will be postponed. In the event of such delays, we will work on the issue until there is a positive solution.

When your item is shipped, your website background will automatically update to the shipped status and attach the tracking number. At the same time, we will send a notification email to your registered email address. We will update the tracking information on your account.

The tracking information normally appears after 2-3 business days following dispatch. If a tracking number is not searchable after this period of time, there are several possible causes. 

The shipping companies have not updated the delivery information on the website with the most up-to-date status; the tracking code for the package is incorrect; the parcel has been delivered a long time ago and the information has expired; some shipping companies will remove the tracking code history.

We would advise you to contact our dedicated Customer Service Department and provide them with your order number. We will contact the shipping company on your behalf, and you will be updated once there is any further information.

Our handling time is 3 business days. This means that your item(s) will generally be sent out in 3 business days.

In the event that you wish to change the shipping address after placing an order, please contact our Customer Service Department as early as possible during the order processing stage to indicate your request. If the package has not been dispatched yet, we will be able to ship to the new address. However, if the package has already been shipped, then the shipping information will not be able to be changed while the package is in transit.

Product prices include shipping. Customs clearance may be involved in some areas, and the buyer will clear customs by himself

Once we provide you with the tracking number, you will be able to check the item delivery status online by accessing the website of the relevant delivery company.

Customs is a governmental agency responsible for regulating the shipments entering a specific country or region. All shipments being sent to or from region must clear Customs first. It is always the buyer’s responsibility to clear customs and pay the relevant Customs duties. We do not add taxes, VAT, duty, or any other hidden charges.

If the items are detained by Customs, the buyer is responsible for clearance of the items.

If your items cannot be cleared from the customs, please contact us first. We will conduct further investigations with the shipping company on your behalf.

After Sales

1). Machine with the default configuration:

CN Warehouse: 7-10 Business Days
Oversea Warehouse: 3-5 Business Days

2). Customized Machine (Only Support Shippment From China Warehouse)

The average period of production: More than 7 Business Days
Shipping: 7-10 Business Days
(Notification: Customs clearance inspections will cause delays 2-3 days in logistics)

Shipping is free on all ComMarker orders.

Please remove all documents of lightburn on your computer, and re-install drive and software of Ezcad.

Please contact our,and advise the SN number of your machine. It is under the laser path, near to the lens.
Drive and software will be sent to you again.

Please turn on of Enable PWM in lightburn. And then you can adjust the frequency as you want.

Cancellation before payment 

If you have not paid for your order yet, then there is no need for you to contact us to cancel it. We do not process orders until a matching payment has been received for the order. If your order is more than a week old and is still unpaid, you will not be able to “reactivate” it by sending a payment, because the prices of the individual items may have changed, along with the currency conversions and shipping rates. You will need to submit the order again with a new shopping cart.

Withdrawing an order after payment

If you have already paid for an order and want to cancel it, please contact our Customer Service Department as soon as possible.

If you are not sure about an issue relating to your order or you wish to change it, please contact our Customer Service Department and put the order on hold while you decide. This will suspend the packaging process while you make changes.

If the package has already been dispatched, then we are not able to cancel or change the order.

If you wish to cancel an existing order because you are ADDING other products, there is no need to cancel the entire order. Simply contact out Customer Service Department and we will process the updated order; there is usually no additional fee for this service.

We pride ourselves in the quality and fit of our clothes. All the Women’s Clothing that we sell are designated as OSRM (Other Special Regulated Materials) and, once sold, cannot be returned or exchanged in cases other than quality issues or mis-shipment.

Quality Issues:

Should you find any item to be materially defective, the item must be returned to us in the same condition as it was sent within 15 calendar days after receiving the garment-it must be unwashed, unworn and with all the original tags affixed. Although we carefully check all merchandise for visible defects and damage prior to shipment, it is the buyer’s responsibility to check the product upon its arrival to make sure it is free from any defects or problems. Damaged goods due to client negligence or items without their tags will not be accepted for refund.


We will exchange your product in cases where the purchased product does not match the item ordered. For instance, it is not the color that you ordered (perceived color differences due to your computer monitor will not be exchanged), or the item you received does not match the style that you ordered.

Please note:

All returned and exchanged items must be returned within 15 calendar days. Returns and exchanges will only occur for eligible products. We reserve the right to refuse the return and exchange of any items that have been worn, damaged, or had the tags removed. If an item we receive has been worn, is damaged, has had its tags removed, or is deemed unacceptable for return and exchange, we reserve the right to return to you any non-compliant pieces. All product packaging must be intact and not damaged in any way.

Before returning any items to us, please read and follow the instructions below. Please make sure that you understand our return policy and that you meet all the criteria. The first step is to contact our After Sales Service, please provide us with the following information:

a. The original order number

b. The reason for the exchange

c. Photographs clearly showing the problem with the item

d. Details of the requested replacement item: the item number, the name and color

e. Your shipping address and phone number

Please note that we are unable to process any returned items which have been sent back without our prior agreement. All returned items must have an RMA number. Once we have agreed to accept the returned item, please make sure you write a note in English containing your order number or PayPal ID so that we are able to locate your order information. 

The return or RMA process can only be initiated within 30 calendar days upon receipt of your items. We can only accept returned products that are in their original condition.

After contacting our Customer Service Department and reaching mutual agreement, you will be able to send the item(s) to us. Once we have received the item(s), we will confirm the RMA information you have provided and review the condition of the item(s). If all of the relevant criteria have been met, we will process a refund if you have requested one; alternatively, if you have asked for an exchange instead, the replacement will be sent to you from our headquarters.

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