QM-SK560A1 and XAA177BE1 (Otis part number) are actually the same product. XAA177BE1 and XAA177BE2 are common, the only difference is the location of the outlet holes on both sides. QM-SK560A1 can replace GCA177GF11. Does the product or packaging support customization?Support product or packaging OEM.2. What advantages do you have in your peers?We have cooperated with OTIS, Thyssen, Schindler, Mitsubishi, Hitachi, Toshiba, Step, Monarch and other international famous brands all the year round. It can meet customers "one-stop, diversified" procurement needs.3. What is the product warranty period? How to carry out after-sales service of the product?All our products are guaranteed for one year; we have an after-sales technical team of more than ten people, serving you 24 hours a day.4. What payment methods are available?T/T, VISA, Mastercard, e-checking, L/C, paypal.5. Which countries and regions are the products mainly exported to?Our products are mainly exported to the Russian-speaking market.