0000891554-01-501662 10-K 7 20001231 20010329 HUDSON TECHNOLOGIES INC /NY 0000925528 5080 133641539 NY 1231 10-K 34 033-80270-NY 1584448 275 N MIDDLETOWN RD PEARL RIVER NY 10965 8457356000 275 N MIDDLETOWN RD PEARL RIVER NY 10965 REFRIGERANT RECLAMATION INDUSTRIES INC 19940617 10-K 1 d25204_10k.txt ANNUAL REPORT EX-3.8 2 d25204_ex3-8.txt CERTIFICATE OF AMENDMENT EX-10.24 3 d25204_ex10-24.txt STOCK PURCHASE AGREEMENT EX-10.25 4 d25204_ex10-25.txt FIRST AMENDMENT TO REGISTRATION RIGHTS AGREEMENT EX-10.26 5 d25204_ex10-26.txt FIRST AMENDMENT TO STOCKHOLDERS' AGREEMENT EX-21 6 d25204_ex21.txt SUBSIDIARIES OF THE REGISTRANT EX-23.1 7 d25204_ex23-1.txt CONSENT OF BDO SEIDMAN, LLP