Современная домашняя декоративная лампа VMAX потолочные

Q 5.What's the shipping method?
A5：It could be Ocean Shipping， Air it and Express(EMS， UPS， DHL，TNT， FEDEX，etc) .Please contact us to confirm the shipment method you preferred before placing an order.
Q 6.How is the aftersales services?
A6：We have aprofessional team which is in charge of after-sales service， also a service hot-line dealing with your complains and feedback.
Q7：Why the produc warranty is 2 years ? Ineedto change the lampafter 2y ears?
A 7.The industrial standard warranty is 2 years.
And it does n'tmean the lamp lifespan is 2 years， it mean we will provide related aftersales service freely during this 2 years.
The lamps could still work well after 2 years normally.
Q8：When's the delivery time fortheorder?
A8：28-35 days after receiving the deposi tand confirming the packaging
Q9.What's main difference between monocrystalline silicon and polycrystalline solar panel?
A9：The cost and conversion efficiencyare different.Both polycrystalline silicon technologyand monocrystalline silicon technology are very mature， but the conversione ficiency of monocrystalline silicon is higher， the volume is small， and the cost is high， while the volume of polycrystalline silicon is large， the conversion efficiency is lower than monocrystalline si icon， but the cost is more economical.