 Electronic Technologies Group Buys 80.1 of RH Laboratories NASHUA, NH and MIAMI, FL ACCESSWIRE September 29, 2021 HEICO Corporation NYSE:HEI.ANYSE:HEI today announced that its Electronic Technologies Group acquired 80.1 of the stock of RH Laboratories, Inc. RH for cash paid at closing. RHs founders will continue to own the balance of the company. 