Inside the fused quartz arc tube two tungsten electrodes doped with thorium, are sealed into each end and current is passed to them by molybdenum foil seals in the fused silica. It is within the arc tube that the light is actually created.

Most types are fitted with an outer glass bulb to protect the inner components and prevent heat loss. The outer bulb can also be used to block some or all of the UV light generated by the mercury vapor discharge, and can be composed of specially doped "UV stop" fused silica. Ultraviolet protection is commonly employed in single ended (single base) models and double ended models that provide illumination for nearby human use. Some high powered models, particularly the lead-gallium UV printing models and models used for some types of sports stadium lighting do not have an outer bulb. The use of a bare arc tube can allow transmission of UV or precise positioning within the optical system of a luminaire. The cover glass of the luminaire can be used to block the UV, and can also protect people or equipment if the lamp should fail by exploding.

Weifang Hengxin Electronic Co.,Ltd established on August 2007,loactaed in Qingzhou private industry park, Weifang city ,Shandong Province, have convenient sea, land and air transportation. We are integrated development and manufacturing in-house company, we specialized in manufacturing all kinds of quartz metal halide lamp, ceramic metal halide lamp,high pressure sodium lamp, ballast and related products.
We have a number of outstanding professional research and development engineers. We can provide professional products design and development.
Our company have laboratories to complete high and low temperature ,vibration and shock test, CMC electrical performance test, photoelectric test etc. All of the products that we designed and developed will be fully tested to meet the requirement in function, high and low tempreture ,repeat calibration, electromagnetic interference, drop from height, and reliability, to provide our customer with high reliability products and end-to-end solution..
Energy saving is our common social responsibility. Let us work together to make sky more blue ,air more fresh and living condition more beautiful.

Q1. Can I have a sample order for metal halide light?
A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.

Q2. What about the lead time?
A:Sample needs 3-5 days, mass production time needs 1-2 weeks for order quantity more than

Q3. Do you have any MOQ limit for  metal halide light order?
A: Low MOQ, 100PCS

Q4. How do you ship the goods and how long does it take to arrive?
A: For the small amount , we usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping also optional.
For big amount we usually ship by shippment or as you required.

Q5. How to proceed an order for  metal halide light?
A: Firstly let us know your requirements or application.
Secondly We quote according to your requirements or our suggestions.
Thirdly customer confirms the samples and places deposit for formal order.
Fourthly We arrange the production.

Q6. Is it OK to print my logo on  metal halide light product?
A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample.